Fede’s Guide to a Healthier Life

31 min read Keywords:  health, longevity, fitness, nutrition, sleep, supplements
Golden wheat fields on a hillside with peasants resting under a pear tree, one napping, others eating and drinking, while more workers harvest grain in the distance
The Harvesters, Pieter Bruegel the Elder, 1565

When I was young I loved science and engineering. Like most nerds, I thought thinking was the only thing that mattered. Working out seemed like a vanity project, something for people who cared about how they looked and not much else. I didn’t understand the body-mind connection at all. I was a skinny kid who spent all day reading, tinkering with computers, and hanging out with friends. The idea that physical health could affect how well I think would have sounded like nonsense to me.

It took me a long time to figure out how wrong I was.

This guide is what I wish someone had handed me back then. It focuses mostly on interventions with strong evidence, and then on a smaller set of lower-confidence but plausibly useful extras. Not what sells supplements or makes for good magazine content. The studies are linked at the end if you want to check them yourself.

One thing before you start: order matters more than most people think. The biggest mistake is optimizing the wrong layer. People buy supplements while sleeping six hours a night. They track every calorie while sitting still all day. Fix the foundation first. Small decisions repeated for years matter far more than occasional heroic effort.

One constraint up front: this is practical education, not personal medical advice. If you are pregnant, take prescription medication, have a chronic disease, have a history of eating disorders, or are dealing with hormonal, thyroid, psychiatric, cardiovascular, or sleep-related problems, treat anything here that looks like treatment advice as something to discuss with a clinician rather than a default.

#The short version

If you read nothing else, read this. These ten habits capture most of what the research says actually matters.

  1. Sleep 7-9 hours at consistent times
  2. Walk 7,000-10,000 steps every day
  3. Lift weights three times a week
  4. Avoid ultra-processed food
  5. Eat 1.6-2.2g of protein per kg of bodyweight
  6. Get daylight daily, and regular sun exposure without burning
  7. Maintain close relationships, in person
  8. Minimize alcohol
  9. Do hard cardio at least once a week
  10. Build and maintain muscle and VO2max across your life

Do these consistently and you are already ahead of most people. Everything below explains why.

#The hierarchy

  1. Sleep – everything else breaks without it
  2. Movement – walk and lift, consistently
  3. Food – real ingredients, enough protein
  4. Metabolic health – a central driver of modern chronic disease
  5. People – social isolation raises mortality risk in a real way
  6. Purpose – having something worth being healthy for
  7. Mind – stress does physical damage
  8. Breathing – small changes can have surprisingly large effects
  9. Light & environment – what surrounds you every day matters
  10. Brain health – keep learning, protect your hearing
  11. Heat & cold – potentially useful, but much less foundational than the basics
  12. Supplements – conditional tools, only once the rest is solid

#Sleep

Not just enough hours. Consistently. A study of nearly 61,000 people found that irregular sleep schedules predicted mortality more strongly than sleep duration itself. The most regular sleepers had 20-48% lower risk of all-cause mortality and 22-57% lower risk of cardiometabolic mortality than the least regular fifth, even after controlling for how long they slept.

Pick a wake time. Keep it every day, including weekends. That one decision improves almost everything else downstream.

A lot of people think they function fine on five or six hours. Most of them don’t. The problem with chronic short sleep is that people adapt to feeling bad. They stop feeling acutely sleepy and mistake that adaptation for functioning normally.

A controlled study at the University of Pennsylvania restricted healthy adults to six hours of sleep per night for 14 days. Their cognitive performance fell to the level of someone who had been awake for 24 hours straight, while their subjective sleepiness ratings stabilized after a few days. In other words, performance kept getting worse while they kept thinking they were more or less fine. That is what makes chronic short sleep dangerous.

Morning light anchors the whole system. Spend 10-15 minutes outside in natural light within an hour of waking, no sunglasses. This tells your brain what time it is. That signal sets when you get tired, when melatonin releases, and when you fall asleep that night.

Your bedroom should be cool, dark, and quiet. Around 18-20C (64-68F). Even faint light through closed eyelids disrupts sleep quality. Keep the phone out of the room.

Caffeine lasts longer than you feel it does. Its half-life is 5-7 hours. A coffee at 3pm still has half its effect at 9pm. People who sleep badly often drink more coffee to compensate, which makes the sleep worse, which increases the coffee. That loop can run for years without anyone noticing. Try cutting it off at noon for two weeks. Most people are surprised by the difference.

If caffeine makes you crash later in the day, try delaying your first coffee 60-90 minutes after waking. The evidence for an exact timing window is weaker than internet advice makes it sound, but for some people it genuinely helps smooth energy across the day. Worth experimenting with.

Before bed, some people benefit from magnesium glycinate (300-400mg) or inositol (1-2g), taken 30-60 minutes before sleep. These are optional, not foundational. Reasonable experiments if sleep is shaky, but not substitutes for fixing light, caffeine, schedule, and stress.

Afternoon dip: 10-20 minutes of NSDR (non-sleep deep rest) or yoga nidra can restore alertness without the grogginess of a long nap.

If you snore, wake unrefreshed, or feel exhausted despite adequate hours: get screened for sleep apnea. It is far more common than most people realize, and many cases go undiagnosed. A CPAP, if needed, can produce dramatic improvements in energy, mood, and cognitive function.

#Movement

People hear “exercise” and think gym membership, running plans, or complicated routines. But a meta-analysis of 15 large cohort studies found that people in the top quarter for daily step count had 40-53% lower all-cause mortality than those in the bottom quarter. That is walking. No gym. No equipment. No special skill.

Aim for 7,000-10,000 steps a day. The benefit plateaus at different levels depending on age. Roughly 6,000-8,000 for adults over 60, and 8,000-10,000 for younger adults. There is no need to obsess past that. The point is daily movement.

Lift weights three times a week. Muscle is not just cosmetic. It is metabolically active tissue. It regulates blood sugar, produces anti-inflammatory signals, and acts as a reservoir for immune function and tissue repair. Muscle mass and strength are among the strongest predictors of health in later decades. Squats, deadlifts, pressing, rowing, and other compound movements done consistently capture most of the benefit.

Train balance on purpose. Falls are a major cause of disability and death in older adults, and the decline starts earlier than people think. Five to ten minutes before a workout is enough. Single-leg stands, step-ups, hip stability work.

Address mobility and posture. Sitting for 8-10 hours a day shortens the hip flexors, weakens the posterior chain, and contributes to stiffness, weak hips, and bad spinal mechanics. All of that feeds chronic back pain. Five minutes a day goes a long way. Hip flexor stretches, thoracic rotation, hamstring work, basic mobility. The goal is to maintain full range of motion in every joint across your life.

Do 1-2 hard cardio sessions a week. VO2max is one of the strongest predictors of lifespan we have. The mortality gap between low and moderate fitness is among the largest of any modifiable factor tracked in epidemiology. Hard cardio also helps mood and depression, comparably to antidepressant medication in clinical trials, partly because it raises BDNF, a protein that supports neuroplasticity and brain cell survival.

Protocol: 4-8 minutes of genuinely hard effort, rest, repeat 2-4 times. Run, bike, row, swim, anything that forces you to work.

Add 150 minutes of easy movement per week on top of that. Walking counts. So does cycling, swimming, or anything you can do while still holding a conversation. Hard sessions build capacity. Easy movement keeps everything working between them.

#Food

A randomized controlled trial gave people either ultra-processed or unprocessed food for two weeks. The ultra-processed group ate about 500 extra calories a day without noticing. Not because they were weaker or less disciplined. Because processed food is engineered to bypass normal satiety signals. Cook real food and most of the calorie problem becomes much easier.

Drink enough water. Mild dehydration often shows up as fatigue, headaches, and poor concentration, not thirst. Aim for 2-3 liters a day, more if you train, use a sauna, or live in heat. Drink before you feel thirsty. Thirst is a late signal.

Eat enough protein. Aim for 1.6-2.2g per kilogram of bodyweight per day, split across at least three meals. Meat, fish, eggs, dairy, legumes all count. Whole food beats powder most of the time. Protein shakes are a backup, not a foundation.

If it suits you, eat in a roughly 8-10 hour window. This mostly helps with portion control and is often easier to sustain than calorie counting, but it is optional.

Broccoli sprouts are a reasonable optional add-on. A small handful, about 30-60g raw, is enough. Crush them slightly before eating to release sulforaphane. Biomarker evidence is good. Long-term disease prevention is promising but not settled.

Eat fermented food every day. Yogurt, kefir, kimchi, sauerkraut, kombucha. Any of these. A Stanford clinical trial found improvements in microbiome diversity and 19 different inflammatory markers. The trial was small, so treat it as strong preliminary evidence rather than settled fact. Fermented foods are cheap, low-risk, and the broader literature points in the same direction.

Minimize alcohol. It disrupts sleep architecture, suppresses muscle protein synthesis, and is classified by the WHO as a Group 1 carcinogen. Any amount increases cancer risk. The U.S. Surgeon General’s 2025 advisory reinforced this. There is no safe amount.

The same basic rule applies to recreational drugs: do not build your life around them, and do not pretend weed is some harmless exception. Cannabis is lower-risk than many other drugs, but lower-risk is not the same as good for you. Regular use can impair attention, memory, motivation, sleep quality, and in some people worsen anxiety, paranoia, or psychosis risk. Smoked cannabis is also still smoke.

The bigger problem is that most people have a stupid picture of what a drug problem looks like. They picture someone homeless, jobless, or obviously falling apart. That is not how it usually looks while it is developing. A person can still work, train, socialize, and look fine from the outside while the substance quietly becomes non-optional. And from the inside, it often does not feel like dependence. It feels useful. It feels social. It feels like stress relief. It feels temporary. By the time someone can clearly see that they need it, it has usually been running more of their life than they wanted to admit.

If you care about long-term health, the default should be minimization, not rationalization.

Take care of your mouth. Gum disease is strongly linked to cardiovascular disease, diabetes, and dementia. The bacteria responsible enter the bloodstream and drive systemic inflammation. Brush and floss daily, scrape your tongue, get professional cleanings at least once a year.

#Metabolic health

Type 2 diabetes, cardiovascular disease, fatty liver disease, many cancers, and a significant portion of cognitive decline all trace upstream to the same cluster: insulin resistance, chronic inflammation, and visceral fat accumulation. These processes develop slowly and silently, often for decades. By the time something shows up on a standard blood test, the process has usually been underway for years.

Metabolic health is highly responsive to behavior. Resistance training, real food, adequate protein, good sleep, and less ultra-processed food address most of it.

Track these markers. These are practical targets, not universally agreed clinical cutoffs, but they are useful benchmarks:

If all five are in range, you are usually in a much better place metabolically. If they are not, go back to the basics: lift, walk, sleep, eat real food, get leaner.

#Know your numbers

Most health problems develop quietly. You feel fine until you don’t. Get bloodwork once a year if you can. It is often cheap relative to the damage it can prevent.

These are useful markers, not universal targets. Some are broadly accepted clinical measures, some are practical heuristics, and some are more about optimization than diagnosis.

Blood:

Metabolic:

Physical:

Daily:

#People

A meta-analysis of 90 studies covering over 2 million people found that social isolation was associated with a 32% higher risk of all-cause mortality. That held after adjustment for age, sex, BMI, smoking, and alcohol. The effect is not just that lonely people eat worse or move less. Isolation appears to have direct physiological consequences: higher cortisol, worse sleep, poorer immune function.

In-person contact is different from digital contact. Texting, screens, following people online. None of it fully replicates the biological and psychological effects of physical presence. Real time with real people matters.

The phone is part of the problem. Social media platforms are engineered to be hard to put down. Variable reward, compulsive checking, fractured attention. Heavy use is consistently linked to worse sleep, higher anxiety, and shorter attention spans.

Rules that actually help: no phone in the first hour after waking, no phone in the bedroom, no screens at meals, leave it behind on walks. Do a longer break sometimes. Even a weekend changes things. The first few hours feel uncomfortable. Then your attention starts to return.

#Purpose

A study of nearly 7,000 American adults over 50 found that those with low life purpose had 2.4 times the mortality risk of those with high purpose over a four-year follow-up, an effect size in the same general range as other major lifestyle factors.

The mechanism is straightforward. When you have purpose, you sleep better, train more consistently, recover faster from illness, and carry lower baseline inflammation. Purpose doesn’t produce health directly. It produces the behaviors that produce health. It sits upstream of almost everything else on this list.

Purpose is not the same thing as happiness. Happiness comes and goes. Purpose is the thing that makes demands of you, that gives you a reason to show up even on bad days. People with strong purpose often report more short-term stress. They also live longer.

It makes discipline automatic. Health behaviors that require sustained willpower are hard when they feel like arbitrary obligations. They become nearly effortless when they’re in service of something real.

Where it comes from: meaningful work, caring for people, building something, getting genuinely skilled at something hard. Not consuming. Not accumulating. Purpose built on contribution and growth tends to last. Purpose built on status collapses the moment the achievements stop arriving.

A question worth sitting with: what would you regret not having done? If the answer is vague, that probably means something.

#Mind

Sustained stress raises cortisol. Elevated cortisol over time suppresses the immune system, impairs memory, and accelerates cardiovascular disease. The body interprets prolonged stress as ongoing threat and responds accordingly, indefinitely, if the signal keeps coming.

There are three routes out: remove the source when you can, calm the body directly, or change your interpretation of the situation. Exercise, sleep, sauna, and breathwork calm the body. Therapy changes interpretation. The mistake is treating stress as something noble to endure instead of something to solve.

The specific problem to interrupt is rumination. Most of the damage doesn’t come from the event itself but from replaying it. What breaks the loop: intense physical exercise, deep absorption in something difficult, or writing to understand rather than just vent. If the loop persists, CBT is one of the fastest and most effective tools available.

Let yourself be bored. The brain does its best organizational work when it has nothing to do. People who fill every gap tend to feel more anxious and less directed than people who leave space. Sit with boredom. It’s uncomfortable for a few minutes. Then it becomes something else.

Schedule play. Unstructured time with no output attached to it. In a structured life it won’t happen by itself. Put it in the calendar.

#Breathing

Most people breathe badly. Habitual mouth breathing and chronic overbreathing are common patterns with real downstream effects, and because breathing is automatic, almost nobody notices.

Chronic mouth breathing is associated with dry mouth, snoring, disrupted sleep, and elevated blood pressure. Breathing too fast can keep the nervous system in a low-level stress state and reduce how efficiently oxygen gets delivered to tissue.

Nasal breathing is generally preferable, especially at rest and during sleep.

The nose filters and humidifies air, slows the breath naturally, and produces nitric oxide, a molecule that opens blood vessels and improves circulation. Mouth breathing tends to engage the upper chest rather than the diaphragm, which is associated with shallower, faster breaths and a more activated nervous system. During hard exercise mouth breathing is often necessary, but defaulting to nasal breathing at rest is worth cultivating.

Breathe less, not more. Your blood is already 95-99% saturated with oxygen. Bigger breaths don’t raise that. What determines how well your body uses the oxygen it has is carbon dioxide. CO2 is the trigger that causes blood vessels to open and oxygen to transfer from red blood cells to tissues. When you breathe too fast, you exhale too much CO2 and oxygen delivery worsens. Try slowing to around 5-6 breaths per minute through the nose. You will feel a mild air hunger, not distress, just a sense that you could take more. That feeling means CO2 tolerance is recalibrating. It passes.

Check your mechanics. One hand on the chest, one on the belly. On every inhale, the belly should move first and further. If your chest rises and your belly stays flat, you have defaulted to a chest-breathing pattern. Many adults have. It can be retrained with a few weeks of deliberate practice.

Wim Hof breathing is a separate, intense intervention. Everything above is about your default breathing pattern. This is different: a deliberate acute activation of the nervous system. Protocol: 30-40 deep rapid breaths, then exhale fully and hold as long as comfortable, then one large inhale held for 15 seconds. Repeat 3-4 rounds. A 2014 study showed that practitioners could voluntarily suppress their inflammatory response to injected bacterial endotoxin, a finding partially replicated since. The broader evidence base is still small, and the method combines breathing with cold exposure, so it is hard to isolate what is doing the work. But the acute physiological signal is real. Use it in the morning or before cold exposure. Never in water. Never while driving.

If you suspect mouth breathing at night: micropore tape over the lips before bed is a low-cost experiment. If you have nasal obstruction, sleep apnea, or any breathing difficulties, check with a doctor first.

#Light & environment

Morning sun helps set the circadian clock. Midday sun does something different. UV exposure on skin contributes to vitamin D production and nitric oxide release, and daylight is linked to mood and circadian regulation more broadly. Swedish researchers found that people who actively avoided sun exposure had significantly higher all-cause mortality, an effect that held even after controlling for vitamin D levels. The benefits of sunlight appear broader than any single molecule.

Aim for regular daylight and some moderate sun exposure on skin when practical. Midday sun can be useful, but skin type, latitude, season, and skin-cancer risk matter. Morning light and moderate daylight exposure are the higher-confidence recommendations.

Protect yourself from burning. Regular moderate exposure is useful. Repeated sunburn is not. Cover up or find shade before your skin starts to redden.

Your indoor air is probably worse than you think. Indoor air is typically 2-5 times more polluted than outdoor air, from cooking fumes, synthetic materials, cleaning products, and mold. A HEPA air purifier in the bedroom, where you spend a third of your life, is probably the best environmental change most people can make. Open windows when you can. A simple air quality monitor measuring CO2 and PM2.5 makes the invisible visible.

Don’t heat food in plastic. Heating plastic releases phthalates and BPA, chemicals that interfere with the body’s hormone system. Use glass or stainless steel.

Protect quiet. Background noise, traffic, open offices, and constant notifications keep the stress system slightly activated all day. The body adapts to it consciously. The cortisol response does not adapt.

#Brain health

The 2024 Lancet Commission on dementia identified 14 modifiable risk factors that may account for around 45% of cases worldwide. Physical inactivity, poor sleep, cardiovascular disease, social isolation, hearing loss, depression, obesity. Most of these are already on this list. The 2024 update added two new factors: untreated vision loss and high LDL cholesterol. Following the rest of this document is already a brain protection strategy.

Learn something genuinely new, continuously. The brain maintains itself through effortful use. Language, music, craft, sport. Activities difficult enough to produce real errors and require adaptation build cognitive reserve, extra neural capacity that delays the functional expression of decline. Passive consumption does not do the same thing. The difficulty is the mechanism. If it is easy, it is not building reserve.

Protect your hearing. The Lancet Commission identified untreated hearing loss as the single largest modifiable dementia risk factor, larger than smoking, larger than physical inactivity. The mechanism is direct: hearing loss causes people to withdraw from conversation, disengage from social life, and stop stimulating their brains. The cognitive decline follows. Get your hearing tested. Wear earplugs anywhere that leaves your ears ringing afterward. That ringing is your auditory system signaling damage.

#Heat & cold

Finnish researchers followed over 2,300 middle-aged men for nearly 21 years. Those who used a sauna four or more times a week for more than 19 minutes had 63% lower risk of sudden cardiac death and 50% lower risk of fatal cardiovascular disease compared to once-a-week users. These are observational studies conducted in Finnish men, and the control group used saunas at least once a week rather than not at all. But the mechanisms make sense: lower blood pressure, better vascular function, lower inflammation. If you have access to a sauna, use it.

Cold exposure is useful too, but method and timing matter. Cold showers produce a genuine norepinephrine spike that improves alertness and mood. Full immersion goes further: larger surface area, longer exposure, stronger cardiovascular and anti-inflammatory adaptations. The research on cardiovascular benefit specifically comes from immersion studies, not showers.

The main caveat: avoid cold exposure right after lifting. It can blunt the adaptation you are trying to get from strength training. Use it after cardio or on rest days.

#Supplements

Supplements matter much less than sleep, movement, food, and metabolic health. They are additions to a working foundation, not substitutes for one.

That said, a few are evidence-backed enough to be worth considering. None of these should be read as personal medical advice, and several matter only in the presence of deficiency, symptoms, or specific goals.

#Reasonable defaults for many people

SupplementWhat it doesDose and timing
CreatineIncreases strength and muscle mass. Also shows modest cognitive benefits, particularly memory and processing speed, especially in older adults. One of the most studied supplements in existence, with an exceptional safety record.3-5g per day. Timing doesn’t matter; just take it daily.
Omega-3 (EPA+DHA)Supports cardiovascular health and reduces inflammation. Aim for 1g/day for most people. Doses above 2g/day have been associated with elevated atrial fibrillation risk in multiple clinical trials. Test your omega-3 index to know your baseline.1g per day with your largest meal as a starting point. Adjust until your blood index reaches 8%. Do not exceed 2g/day without medical advice.
Vitamin D3 + K2Most useful in people who are actually deficient. Test before assuming. Magnesium is required for D3 activation.2,000-5,000 IU D3 + 100-200mcg K2 (MK-7 form), with food. Retest rather than guessing long-term.
Psyllium huskLowers LDL cholesterol by around 13 mg/dL on average, improves blood sugar control, and significantly reduces hunger. One of the most effective cardiovascular interventions available without a prescription.10-15g per day in 2-3 doses, 15-30 minutes before meals, in a full glass of water.
Magnesium glycinateRequired for over 300 biological processes. Improves sleep quality, reduces blood pressure, and supports muscle recovery.300-400mg, 30-60 minutes before bed.
InositolCan improve sleep onset and quality in some people. Also supports insulin sensitivity, though most of that evidence comes from studies in women with PCOS. Pairs well with magnesium.1-2g, 30-60 minutes before bed. Avoid treating it as a default if you already sleep well.

#Consider depending on your situation

SupplementWhat it doesDose and timing
BerberineActivates AMPK, improving insulin sensitivity and reducing blood glucose, HbA1c, and triglycerides. Most useful for people with elevated metabolic markers. Interacts with many medications (statins, metformin, blood pressure drugs, and others) because it inhibits CYP enzymes.500mg, 2-3 times per day with meals. This is not a casual supplement if you take medication.
NMN or NRRaises NAD+, a molecule involved in cellular energy and repair that declines with age. Mechanism is real and confirmed in humans. Long-term longevity outcomes are not yet established.500-1,000mg NMN or 300-500mg NR, in the morning. Interesting, but firmly optional.
Prebiotic fiber (inulin)Feeds beneficial gut bacteria. Start low; too much too fast causes bloating.2-3g/day to start, gradually increasing to 10g, with meals.
ZincUseful only if bloodwork confirms deficiency. Excess zinc blocks copper absorption.15-30mg with food.
Collagen + Vitamin CSupports tendon and connective tissue repair. Take before exercise; blood flow to tendons spikes during training, which is when collagen is incorporated.10-15g collagen + 50mg vitamin C, 30-60 minutes before training.
AshwagandhaReliably reduces cortisol during high-stress periods. Cycle off after 6-8 weeks. Avoid if pregnant, breastfeeding, or if you have thyroid, autoimmune, psychiatric, or hormone-sensitive conditions.300-600mg KSM-66 extract, with food.
Tongkat AliMay support testosterone in some men with lab-confirmed low levels. This is not a default wellness supplement. See a doctor before starting.400mg in the morning. Retest at 8 weeks.
GingerAnti-inflammatory, digestive support, modest metabolic benefits. Low priority relative to everything else, but among the most robustly studied botanicals.1g with meals.

#Final principle

Sleep enough. Move daily. Lift. Eat real food. Stay metabolically healthy. Keep close relationships. Protect your attention. Avoid obvious self-destruction.

#Research appendix

Biomarker targets

Sleep regularity

Sleep duration

Walking

Resistance training

VO2max & exercise for mental health

Social connection

Chronic stress

Rumination

Sauna

Cold water immersion

Ultra-processed food

Time-restricted eating

Protein

Fermented foods

Broccoli sprouts / sulforaphane

Creatine

Omega-3

Vitamin D3

Psyllium husk

Magnesium

NMN / NR

Inositol

Tongkat Ali

Ashwagandha

Ginger

Collagen + Vitamin C

Breathing / nasal breathing

Purpose and mortality

Light / sun exposure

Air quality and cognition

Endocrine disruptors

Dementia / modifiable risk factors

Hearing loss and dementia

Cognitive reserve / learning

Metabolic health / insulin resistance