Frequently Asked Questions
How much sleep do I really need?
Most adults need 7-9 hours. Quality matters as much as quantity. Individual needs vary.
What's circadian rhythm?
Your internal 24-hour clock governing sleep, hormones, metabolism, and other functions. It responds to light and timing cues.
How does light affect sleep?
Light exposure, especially in the morning, sets your clock. Blue light at night disrupts it. Strategic light management improves sleep.
Can I catch up on sleep?
Somewhat, but chronic sleep debt has cumulative effects. Consistent adequate sleep is better than catch-up.
What's sleep hygiene?
Habits supporting good sleep: consistent schedule, dark cool room, no screens before bed, avoiding caffeine late, and similar practices.
When should I seek professional help?
If sleep problems persist despite good habits, especially with daytime impairment. Sleep disorders like apnea need professional assessment.
