4 articles
How screen light affects sleep, why it is not only about the blue spectrum, whether blue-light glasses and night mode work, and what actually helps you fall asleep.
What jet lag is, why flying east is harder than west, and which methods — light, melatonin, schedule — genuinely speed up resetting your body clock.
Sleep hygiene rules sorted by strength of evidence: what genuinely improves sleep, what is oversold, and why chronic insomnia needs CBT-I instead.
Melatonin is a timing signal, not a sedative. The honest effect size, the dose and timing that matter, the supplement quality problem, and who really benefits.