Biohacking in practice

An evidence-based morning routine

Within the first 30-60 minutes after waking, three things happen that shape the day — all measurable, all changeable: **1) Bright light (ideally sunlight) for 5-15 min** — shifts the cortisol peak into the right phase, stabilizes the sleep-wake rhythm. If you get up in winter, a 10,000-lux daylight lamp during the first 15 min at the breakfast table helps. **2) Water + electrolytes before caffeine** — most people wake up mildly dehydrated. 500 ml of water plus a pinch of salt and possibly magnesium glycinate or potassium is the cheapest performance lever of the day. Caffeine only 60-90 min after waking, otherwise it disrupts the natural cortisol wave. **3) Movement 10-30 min** — not a hardcore workout, but a 20-min walk or light mobility. Activates the circadian clock, improves insulin sensitivity for the day, measurably lifts cognitive performance. What you can skip: morning smartphone scrolling (cortisol spike), elaborate supplement stacks before breakfast (except vitamin D3 + K2 with fat), aggressive cold plunge without buildup.

The sleep stack that actually works

80 % of biohacking effects stand or fall with sleep. Practical order, what works most: **Base (free, highest ROI):** consistent bedtime (±30 min), bedroom 17-19 °C, blackout, screen cutoff 60-90 min before sleep or at least aggressive blue light filtering (Night Shift + f.lux). **Supplements (medium ROI):** magnesium glycinate 300-400 mg 60-90 min before sleep — most effective “quick win.” Glycine 3 g before sleep for deeper REM phases (RCT-backed). Apigenin 50 mg for anxiety-driven insomnia. Avoid: high-dose melatonin (>1 mg) for regular use — studies show 0.3-0.5 mg usually works better than 5 mg. **Tools (more effort):** mouth taping for mouth breathers — controversial but effective for many. Weighted blanket for anxiety insomnia. Breathing apps (Bohr effect, 4-7-8) for sleep onset issues. Measure: Apple Watch, Oura, Whoop all deliver usable HRV and sleep stage data. If you hate trackers: subjective sleep quality in a 1-10 journal over 4-6 weeks is enough as a baseline.

Cold, heat and movement — the methods that work

These three methods have by far the strongest evidence for lifestyle interventions: **Sauna 4x/week, 20 min at 80-90 °C** — Finnish dry, not infrared cabin. Kuopio cohort (Laukkanen et al.): 40 % risk reduction for cardiovascular mortality at 4-7x/week. Heat shock proteins, endothelial function, mental resilience. One of the few interventions with tier-1 observational data. **Cold plunge or cold shower** — 2-3 min at 11-15 °C, 2-4x/week. RCT-backed effects on mood, alertness and brown adipose tissue. Pre-workout: don't cold plunge (reduces muscle growth), post-workout: only if hypertrophy isn't the goal. If ice bath feels too extreme: 60 sec cold at the end of every shower, gradually ramp up. **Strength training 3x/week** — the biggest longevity lever overall. Squats, deadlifts, rows, presses. 8-12 reps, 3-4 sets, RPE 7-9. If you don't have a gym: a pull-up bar + kettlebells delivers 80 % of the effects. Cardio (zone 2 training, 150-180 min/week) complements for VO2max gains.

Nutrition: the practical minimum

You don't need a perfect diet protocol. You need: **Protein:** 1.6-2.0 g/kg bodyweight daily. At 75 kg = 120-150 g. That's more than most think — and the most common bottleneck in biohacker diets. Sources: cottage cheese, Greek yogurt, fish, poultry, eggs, whey protein as a gap filler. **Vegetables + fiber:** 30-40 g fiber daily. The microbiome thanks you, insulin sensitivity rises, satiety comes with fewer calories. **Omega-3:** 2-3 g EPA+DHA daily, ideally from fatty fish (2-3 portions/week) or as fish oil/algae oil. Most people are dramatically under-supplied. Omega-3 Index blood test should be above 8 %. **Avoid:** industrial sugar as a regular component, refined plant oils (sunflower oil, industrially processed canola oil), alcohol as stress coping. An occasional pizza ruins nothing; the daily cola does. **What many get wrong:** hyperfocus on carb timing, keto dogma, supplement stacks before base nutrition. 80 % of results come from protein adequacy + sufficient vegetables + omega-3. The rest is fine-tuning.

How do I start biohacking in practice?

Three weeks, three things: 1) Consistent bedtime, 7-8 h sleep, cool dark bedroom. 2) Strength training 3x/week (can be home-based), 30-60 min/day movement. 3) Protein 1.6 g/kg bodyweight, creatine 4 g/day, magnesium 300 mg in the evening, omega-3 2 g/day. In parallel, pair a wearable and collect baseline HRV, sleep duration and resting heart rate. Only after 3 weeks add the next intervention (e.g. sauna or cold plunge).

What is an evidence-based morning routine?

30 min after waking: 1) bright light (sunlight or 10,000-lux lamp) for 10 min, 2) 500 ml water with a pinch of salt, 3) 20 min movement (a walk suffices), 4) breakfast with protein (at least 30 g) and fiber, 5) caffeine only after 60-90 min. Avoid: smartphone in the first 15 min (cortisol spike), caffeine on empty stomach (disrupts cortisol rhythm), heavy breakfasts without protein. This routine costs 30-45 min and delivers measurable effects on energy and sleep quality.

Which sleep stack is best-evidenced?

Magnesium glycinate 300-400 mg 60-90 min before sleep (RCT-backed for sleep onset and quality), glycine 3 g before sleep (RCT-backed for REM and subjective sleep quality), and for anxiety insomnia apigenin 50 mg (small studies). Avoid for regular use: high-dose melatonin (>1 mg) — studies show 0.3-0.5 mg usually works better. More important than any supplement: consistent bedtime, cool bedroom (17-19 °C), blackout, screen cutoff.

How often should I sauna?

Optimal: 4-7x/week, 15-25 min each at 80-90 °C, Finnish dry. Kuopio cohort (Laukkanen et al.): 40 % risk reduction for cardiovascular mortality at 4-7x/week, 24 % at 2-3x/week. Effects: endothelial function, blood pressure, mental resilience, heat shock proteins. If you don't have a home sauna: a monthly thermae membership is cheaper than you think (~€30-60/month). Infrared cabins deliver less heat stress and thus less effect.

Cold plunge or cold shower — what's enough?

For mood and alertness: 60 sec cold at the end of every shower is enough. For adaptation effects (brown adipose tissue, resilience): 2-3 min at 11-15 °C, 2-4x/week, ideally in water. Cold plunge isn't better than cold shower if you only want mood and alertness effects. Important: not directly after strength training (reduces hypertrophy per Roberts et al.), good for recovery days or mornings. Build up gradually, don't jump in at 4 °C cold.

How much protein do I really need?

1.6-2.0 g/kg bodyweight daily for active adults with a strength training routine. At 75 kg = 120-150 g. That's more than most think — and the most common bottleneck in biohacker diets. Athletes in muscle-building phase: up to 2.2 g/kg. Over-60s: at least 1.6 g/kg due to anabolic resistance. Distribution: 30-40 g per meal, 3-4 meals, last meal with casein-containing cottage cheese before sleep optional. Sources: cottage cheese, Greek yogurt, fish, poultry, eggs, whey as gap filler.

Which supplements do I really need?

The base 4 with the best evidence: creatine monohydrate 3-5 g/day (women possibly 5-10 g), omega-3 EPA+DHA 2-3 g/day, vitamin D3 + K2 (if deficient 2000-4000 IU/day), magnesium glycinate 300-400 mg/day in the evening. Optional based on goal: iron for women with ferritin <50 (medical), ashwagandha for cortisol topics, berberine for insulin resistance (diabetics medical), L-theanine for caffeine anxiety. Everything beyond is fine-tuning — and should be decided based on blood panels.

How do I combine strength training and cardio sensibly?

Recommended split: 3x/week strength training (45-75 min, compound exercises), 2-3x/week cardio (45-60 min zone 2, meaning breathing still controlled), 1x/week optional HIIT (10-20 min). Total ~5-6 training days per week. If hypertrophy is the goal: separate cardio from strength training (at least 6 h apart) and not directly before. If longevity/endurance is dominant: zone 2 training per Attia's recommendation 150-180 min/week plus 1x VO2max HIIT.

How do I measure whether biohacking is working?

Three baseline markers for 6-12 months: sleep duration and quality (wearable + subjective 1-10), HRV (Apple Watch, Oura, Whoop), resting heart rate. Plus 2x/year blood panel: vitamin D, ferritin, hsCRP (inflammation), HbA1c (insulin control), lipid profile with ApoB. If you want more: Omega-3 Index, thyroid, in women a hormone profile cycle-dependent. Trackers deliver daily data, blood panels deliver half-year trends. Both together beat any pure-tracker or pure-blood-panel strategy.

How does practical biohacking differ from a clinic / practice?

A “biohacking practice” can mean both: practical application (this page) or a medical practice with biohacking focus (functional medicine, anti-aging clinics). For most people, 90 % of optimization is lifestyle (sleep, training, nutrition, stack) and 10 % medical guidance (blood panels, hormone replacement when indicated, possibly peptides). Practical biohacking doesn't exclude a competent GP or specialized clinic — it makes the discussion there more substantive.