—Exercise regularly, but not after the early evening. Avoid caffeine after 2 p.m. Try to avoid late-night eating and alcohol, but don't go to bed hungry, either.
—Don't use electronics — laptops, tablets, smart phones, etc. — late at night. Not only will the content stimulate your brain, the brightness of the screen is comparable to a morning walk in the sun when it comes to waking you up.
—Make your bed a place just for sleep. Don't study, watch TV or do anything else there (or not much else. Some colleges advise limiting your bed to the "three S's" — sleep, sex and sickness).
—If you have early classes on some days, try not to sleep in on the others. Experts say a regular schedule is the most essential element of a healthy sleep routine.
—Try to avoid naps, and if you do nap, nap before 3 p.m. and for no more than 20 minutes. Otherwise you'll keep yourself up at night.
—Set your alarm clock — but for the evening, at a reasonable bedtime. That way, you're less likely to need it in the morning (if you need an alarm clock to wake up feeling rested, you're not sleeping enough).