
Sleep & Recovery
Caffeine and Sleep: When to Stop Drinking Coffee
How caffeine really works: adenosine blockade, half-life and CYP1A2 genetics, EFSA safe limits, and the evidence-based cut-off time from a 2023 meta-analysis.
13 min read
2 articles

How caffeine really works: adenosine blockade, half-life and CYP1A2 genetics, EFSA safe limits, and the evidence-based cut-off time from a 2023 meta-analysis.

Sleep hygiene rules sorted by strength of evidence: what genuinely improves sleep, what is oversold, and why chronic insomnia needs CBT-I instead.