Poor sleep hygiene is a common problem. Below are some essentials of good sleep hygiene: * Personal Habits * Fix a bedtime and an awakening time. The body "gets used" to falling asleep at a certain time, but only if this is relatively fixed. Go to bed and wake up the same time each day, even on weekends and days off. This is an essential component of good sleeping hygiene. * Avoid napping during the day. The late afternoon for most people is a "sleepy time." If you must take a nap, limit the nap to 30–45 minutes. * Avoid alcohol 4-6 hours before bedtime. While alcohol has an immediate sleep-inducing effect, a few hours later as the alcohol levels in your blood start to fall, there is a stimulant or wake-up effect. * Avoid caffeine 4-6 hours before bedtime. This includes c