The 8 rules that fix most sleep problems.
Same bedtime, same wake time — every day.
Blackout curtains. Earplugs or white noise if needed.
65–68 °F. Your body must cool to fall asleep.
Blue light suppresses melatonin by up to 50%.
And no alcohol within 3 hours of bed.
Stimulus control: train the brain to expect sleep.
Dim light. Reading, stretching, breathing.
After 20 min, leave the bed. Return only when sleepy.