Summary (from the bottom of the page): Sleep is important for learning! Sleep deprivation results in intellectual deprivation! Sleep as much as you feel you n

Summary (from the bottom of the page): Sleep is important for learning! Sleep deprivation results in intellectual deprivation! Sleep as much as you feel you need Avoid alarm clocks Forget about trying to fall asleep at pre-planned time! Let your body decide! Forget about trying to fall asleep quickly! If your body decides it is the right time, it will come naturally! Do not try to make yourself sleepy! It is enough you stay awake and keep on working/learning long enough! It is much better to eliminate the source of stress rather than to try to forget stressful situations right before the bedtime! Learn the details of your sleep timing (how many hours you sleep, how many hours before you need to take a nap or go to sleep again, etc.). Use this knowledge to optimize your schedule. Adjust the timing of intellectual work to your circadian cycle (see Fig. 5) Stick with good people! The bad lot will often ruin your slumber Be careful with caffeine. Drink coffee only upon awakening (or after a nap if you take one) Do not go beyond a single drink of alcohol per day. Drink it at siesta time Quit smoking! Use siesta time for a nap if you find it helpful If you cannot fall asleep in 30 minutes, get up! You are not yet ready for sleep! If you experience racing thoughts at the time when your body calls for sleep, the best method is: get up and use ... SuperMemo for 30 minutes! Few other activities can be equally taxing to your tired brain (do not expect this to work before your circadian timing though) If you sleep it out and still not feel refreshed, be sure you do not sleep against your circadian rhythm. Try free running sleep. Remember that you may need 1-2 weeks to synchronize all bodily functions before this starts working! If you cannot get refreshing sleep even in free-running conditions after at least a month of trying, consult a sleep specialist (see: Sleep Disorders). Remember, however, that a bad night is a factor of life. Few can avoid it. Do not get alarmed even if it happens weekly I'd be interested if a qualified person could corroborate these recommendations.