Sleep isn't a pause. It's maintenance.
You sleep enough hours, yet still wake up tired? Sleep, light, breathing and heart rate variability are one interconnected system. Here is how to set it up.
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.
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.
Sleep & recovery in the book NAVRHNUTÝ
Sleep and RecoveryThe Secret of Biological Renewal
22 pp.BreathingThe Oldest Biohack, Still Ignored
9 pp.Heart RateThe Number That Knows You Better Than You Do
10 pp.LightThe Most Powerful Biological Input We Ignore
9 pp.
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