Don’t let yourself get too full or too hungry before you go to sleep. Avoid consuming large or heavy meals within a few hours of going to bed. Discomfort may keep you awake at night. Tobacco, caffeine, and alcohol should all be taken with prudence. Cigarettes and coffee have long-lasting impacts on the body that can disrupt sleep for hours at a time. Even if alcohol induces drowsiness, it can cause sleep disturbances later in the night.