We need less sleep as we get older. The primary function of sleep is muscular repair. Snoring is an indicator of deep sleep. You can't get too much sleep. It is normal to feel tired after a good night's sleep.
Newborn babies dream up to eight hours a day.
Caffeine, tobacco, and alcohol all can significantly enhance sleep. Sleepwalking is common among children but rare among adults. Pregnant women need more sleep than other people. During REM sleep both men and women become sexually aroused. Repetitive leg jerks during sleep are normal.