Biohacking backed by science. No hype.
Sleep, hormones, metabolism, brain, longevity, women and family. Evidence-based articles by Michal Bajus.
Red light panels: what photobiomodulation can and cannot do
Red and near-infrared light has moved from clinics into living rooms. We explain how it works, which wavelengths and doses make sense, and where the research ends and the marketing begins.
Why 8 hours isn't enough — and what to actually do about it
You sleep enough hours. Maybe even more than enough. And yet you wake up tired, you need coffee, and until ten in the morning only part of you is functioning. The problem isn't how long you sleep. It's what happens during that sleep — or doesn't.
LED face masks: what blue, red and near-infrared light can do
LED masks promise clearer, firmer skin without a trip to the clinic. We look at what research says about blue, red and near-infrared light, how to protect your eyes and what to realistically expect.
Testosterone — why it is declining in every man, and what to do about it
It is not just about libido. Testosterone drives energy, muscle mass, mood and your ability to make decisions. And today, it is declining in men faster than ever before.
Grounding (earthing): what we know about going barefoot and grounding mats
Grounding promises less inflammation and better sleep. We explain where the hypothesis comes from, what small studies have shown, why being outdoors barefoot makes sense and how to use mats safely.
Biological age — a complete guide to measuring and optimising it
Your calendar age is just a number. Your biological age determines how long — and how well — you will live. And it can be measured. It can also be changed.
EMF at home: Wi-Fi, 5G, phones and power lines without the panic
Wi-Fi, 5G, a phone by the pillow or a power line behind the house can be worrying. We explain non-ionising radiation, how limits work, what large studies show and which cheap precautions make sense.
Dopamine — the hormone of motivation, not just pleasure
Dopamine is not the pleasure hormone. It is the hormone of anticipation, seeking and motivation. And the modern world systematically drains it before you can use it for anything meaningful.
PEMF mats and devices: what pulsed electromagnetic fields can do
Pulsed electromagnetic fields are used in medicine, for instance for fractures that fail to heal. We explain where the evidence lies, how home mats differ, who should avoid them and what to expect.
Blood sugar — why stable glucose is the foundation of everything
You are not diabetic, but your blood sugar is riding a roller coaster. Every spike and crash = fatigue, hunger, brain fog, cravings. Continuous glucose monitoring has changed the game.
Water technologies: what works and what is just marketing
Filters, reverse osmosis, hydrogen water and “structured” water – we explain which technologies are backed by research and which are expensive promises without evidence.
Your cycle as a superpower — biohacking in sync with your hormones
The female hormonal cycle isn't a weakness. It's a biological super-cycle — four phases, each with its own cognitive and physical profile. Understanding it means working with your body, not against it.
Finnish sauna vs infrared sauna: what the data show and how to use them sensibly
Finnish studies link frequent sauna bathing with better heart health, but these are observations, not proof of cause. We explain what heat does to the body, how infrared saunas differ and who should be careful.
Biohacking basics — how to become the architect of your own body
150 years ago, it was called common sense. Today we call it biohacking. Morning light, movement, fasting, cold, breath — ancient techniques with a modern scientific explanation.
Cold therapy: ice baths, cold showers and cryo chambers without the myths
Cold sharply raises noradrenaline, can lift mood and activate brown fat. It also carries real risks, and poorly timed it may blunt muscle growth. We explain what is supported and how to start safely.
Wearables: what watches, rings and sensors can really tell you
Watches, rings, chest straps and glucose sensors track heart rate, HRV, sleep and blood sugar. We explain which data are reliable, where devices get it wrong and how to use the numbers sensibly, without stress.
GrimAge: what this epigenetic clock measures, how it is tested and what influences it
GrimAge is one of the best-known epigenetic clocks. We explain how it is calculated, how the blood test works, what the result really says about risk, and what research suggests you can influence.
Blue-light glasses and evening light: what really helps your sleep
Light at night demonstrably suppresses melatonin and shifts the body clock. Blue-blocking glasses, however, have mixed evidence. We explain what works better – dim light in the evening, daylight in the morning – and when amber lenses may make sense.
Air purifiers at home: what they really filter and what they don’t
Indoor air is often more polluted than you would expect. We explain what a True HEPA filter and activated carbon can do, how to match output to room size, why a purifier does not lower CO₂ and which technologies are best avoided.
Home water filters: how to choose the right system
From filters on the main water inlet and under-sink systems to filter jugs. We explain why to start with a water analysis, what certifications mean and how to combine solutions sensibly.
Mouth taping during sleep: what we know and when to skip it
Taping your mouth shut at night is spreading as a simple fix for snoring and a dry mouth. We explain why nasal breathing matters, what the studies show and who should not try tape at all.
Light — the most powerful biological input we ignore
150 years ago, the human daily rhythm was synchronised with the sun. Today it is governed by LED screens — and we see the results in an epidemic of sleep disorders, depression and metabolic disease.
Nasal strips and dilators: what they can do for sleep and where their limits are
Nasal strips and internal dilators widen the narrowest part of the nose. We explain how they work, what the research says, why they do not treat sleep apnoea and when to see an ENT doctor.
Breath — the oldest biohack we still ignore
Breathing is the only autonomic function of the body you can control consciously. That makes it a direct lever on your nervous system — and therefore on stress, sleep, performance and immunity.
Your heart rate — the number that knows more about you than you do
A resting heart rate below 60 beats per minute is linked to a lower risk of cardiovascular disease and to longevity. That's no coincidence — it's a measurable outcome of biological optimisation.
Cortisol — the hormone that will save you and destroy you
Cortisol is an evolutionary stroke of genius. For short-term survival, it is perfect. For modern life full of chronic stress, it is a disaster for your hormones, immunity and brain.
Oestrogen, xenoestrogens and silent feminisation
Oestrogen is not just a female hormone. In men, it governs bone health, the cardiovascular system and libido. And today, the environment mimics it — without your knowledge.
The thyroid — the silent conductor nobody hears
The thyroid weighs 20–30 grams. Its hormones control the metabolism of every cell in your body. When it isn't working properly, you feel it everywhere — we just don't know where to look.
Chronic inflammation — the silent destroyer behind it all
Inflammation is an evolutionarily perfect rescue system. Chronic inflammation is that same system switched on permanently — and it plays a part in practically every chronic disease.
The microbiome — 38 trillion allies you are ignoring
Your gut bacteria weigh 1–2 kg. They produce neurotransmitters, regulate immunity and influence both your weight and your mood. And most people are actively destroying them.
Fasting — the oldest biohack medicine forgot
Humans have fasted for millennia — for religious, cultural and practical reasons. Science now knows why it works: autophagy activation, lower insulin, rising ketones and DNA repair.
Food isn't just calories — it's information for every cell
Calorie counting has one fundamental flaw: it assumes all calories are equal. They aren't. A glass of sugar and a glass of olive oil have a similar energy content — but a completely different biological impact.
Supplements — what works, what's marketing and what depends on you
Supplements are a tool, not a substitute for lifestyle. But chosen correctly, taken at the right time and dose — they can be the difference between suboptimal and excellent biology.
Focus in the digital age — how to win back your concentration
Over the past 20 years, the average attention span has fallen from 12 to 8 seconds. This is not just a feeling — it is a measurable neurological change. And it can be reversed.
Mental health through biohacking — the nervous system as the foundation
Depression, anxiety and burnout are not merely psychological states. They are biological states of the brain, hormones and inflammation. And they have biological solutions.
Stress — the biggest saboteur you can turn into an ally
Cortisol is essential. Without it you wouldn't survive a single day. The problem starts when you run in emergency mode for years — and your body can't switch off.
Depression, anxiety and ADHD as biological signals
Mental health is not just a matter of the mind. It is biology — inflammation, hormones, the microbiome, sleep and nutrition. All of these influence mood, cognition and emotional stability.
Migraine — when your head says enough
Migraine is not just a headache. It is a neurological event with a biology that science has only recently come to understand — and with levers most doctors never mention.
Biological age — how to measure it and change it
Your calendar age is a number. Your biological age is reality. You can be 55 and function biologically like a 40-year-old — or the other way round. Today, science can measure both.
Autophagy — how the body cleans itself (and why most people block it)
Yoshinori Ohsumi received the Nobel Prize in 2016 for discovering autophagy. This cellular recycling mechanism is one of the most powerful anti-ageing tools there is — and it is free.
Blue Zones — what people who live to 100 really do
Sardinia, Okinawa, Ikaria, Loma Linda, Nicoya. Dan Buettner spent decades studying the communities with the highest share of centenarians. His conclusions surprised even the researchers themselves.
Movement isn't about calories — it's a biological signal
Movement is the cheapest and most effective biohacking intervention there is. Not because it burns calories — but because it reshapes your biology on dozens of levels at once.
Joints, collagen and the musculoskeletal system — an investment in mobility to 100
Most people only start paying attention to their joints once they begin to hurt. That is late — but not too late. Articular cartilage responds to load and nutrition. It is a dynamic system, not a static structure.
Menopause — a biohacking approach to a transition without suffering
Menopause isn't a disease. It is a hormonal transition — but one that dramatically changes metabolism, cognition, sleep and cardiovascular health. Both modern medicine and biohacking offer solutions.
Fertility and biohacking — what really affects your chances of conceiving
Fertility isn't just a question of age. It is the result of hormonal balance, metabolic health, inflammation and lifestyle — factors that are largely within your influence.
Sex, libido and intimacy — a biological language we're forgetting how to read
Libido is a barometer of your overall health. When it drops, your body is telling you something isn't working. Cortisol is too high. Testosterone too low. Sleep insufficient. Inflammation chronic.
Biohacking that survives sleepless nights and Sunday lunch
You can't optimise yourself in isolation — not when you're raising a family. Biohacking for families isn't about the perfect protocol. It's about minimum effective interventions that work even on 5 hours of sleep.
Your first year — month by month to a new biology
The most common beginner mistake: trying to change everything at once. The result: overload, demotivation, giving up. A systematic approach works differently — one pillar per month, measure, adjust.
Reference ranges — what the lab didn't tell you
Most people get their blood results with the note 'everything within normal range' — and go home satisfied. A biohacker looks at the actual numbers and asks: where within the range? The lower edge? The middle? Or the optimum?
Environment — optimising the world around you
You can have a flawless diet and training plan — but if you sleep in a warm, bright, noisy room, your biology stagnates. Your environment is the silent programmer of your genes.
Microplastics — invisible visitors in every one of your cells
The average European is estimated to consume 5 grams of microplastics a week — the equivalent of a credit card. Most of it comes from packaged food, water from plastic bottles and the air.
Genetic tests and nutrigenomics — what your DNA can and cannot tell you
A DNA test for a few dozen euros promises a tailor-made diet and a forecast of disease. We explain the difference between consumer and clinical tests, what MTHFR and APOE4 mean, how to read polygenic scores and why genes are not destiny.
GLP-1 drugs and peptides: what semaglutide and tirzepatide really do
Ozempic, Wegovy and tirzepatide are among the biggest breakthroughs in modern medicine. I explain how they work, what the large trials showed, how to protect your muscle during treatment, and why the peptides popular in the biohacking community do not yet rest on equally solid evidence.
Hyperbaric Oxygen Chamber: What HBOT Can Do and What It Cannot Yet
Breathing pure oxygen under increased pressure is a proven treatment for carbon monoxide poisoning and hard-to-heal wounds. Israeli studies from 2020 turned it into a longevity star. We explain how it works, what the data really showed, how soft chambers differ from medical ones, and what the risks are.
Ketosis and Ketones: the Keto Diet, Exogenous Ketones and How to Measure Them
Ketosis is a natural state in which the body runs on fat and ketones. We explain how to get there through diet or ketone drinks, how to measure it, where the evidence is strong and when it is better avoided.
Longevity drugs: rapamycin, metformin, NAD+ and NMN
Rapamycin, metformin and NAD+ precursors are among the most closely watched molecules in ageing research. I take NMN myself and have had a good experience with longevity drugs. I explain how they work, what the studies showed and how to approach them sensibly.
Mitochondria — how to strengthen your cells’ power plants
Mitochondria produce the energy for every movement and every thought, and they weaken with age. We explain mitophagy and biogenesis, what exercise, cold and fasting do, and which supplements – from CoQ10 and creatine to urolithin A – are backed by evidence.
Neurostimulation and neurofeedback — what electricity, light and sound can do in the brain
Neurofeedback, tDCS, vagus nerve stimulation through the ear, photobiomodulation and binaural beats. What the studies show, what home devices can do and what to watch out for.
Nootropics — what really sharpens the mind and what is just marketing
Caffeine with L-theanine, creatine, bacopa, lion's mane, rhodiola, omega-3, modafinil and racetams. What the studies say, where the risks are and how to test and cycle nootropics sensibly.
Sarcopenia: why your muscles decide how you will age
The loss of muscle and strength with age is a silent process that stays invisible for years. We explain how to recognise sarcopenia by grip strength, how much protein and leucine you need, what creatine and strength training bring and why you should protect your muscles especially when losing weight.
Oral health and the microbiome — why health starts in the mouth
The mouth is not a separate part of the body that only the dentist deals with. Your gums, the bacteria on your tongue and the way you breathe affect your blood vessels, blood sugar, blood pressure and sleep.
VO2max: the strongest number in longevity — zone 2, intervals and strength
Cardiorespiratory fitness predicts lifespan better than most common risk factors. We explain how to build it with zone 2, Norwegian 4×4 intervals and strength training, how to measure it and how much exercise is enough even with a packed schedule.
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