The document discusses sleep, including sleep apnea where the throat closes during sleep causing breathing to stop, frequent waking, and lack of rest. It describes REM sleep occurring 90 minutes after falling asleep where you can dream intensely. Tips for better sleep include sticking to a routine bedtime, exercising early in the day, exposing yourself to morning light, removing distractions from the bedroom, avoiding stimulants before bed, and using relaxation techniques. Herbal supplements like melatonin, magnesium, and theanine can also promote better sleep.