For some, unfortunately, Melatonin does not work, and in some cases may even induce a rapid heartbeat. While excercise does relieve tension and stress, it's better to do so during mornings or before your last meal, at the latest. Because excercise actually raises the body temperature which in turn, wakes you up, excercise before bedtime is not a good way to tackle insomnia. Many former insomniacs have turned to meditation and yoga to ease their nights. Practicing meditation and yoga is similar to reading a book, because they are all inducive to mind and body relaxation.
Yoga actually loosens the muscles in the body, putting it in a state close to that of being asleep.
Perhaps the most overlooked aspect of insomnia, are the presleep rituals an individual practices. The diet is an important facet of sleep, and even more important when it may be one of the obstacles getting you there. Hunger is as much a deterrant to falling asleep as is having a heavy meal. It's important to get your last meal well out of the way before turning in for the night. And in case you've forgotten and your mother isn't there to remind you, a glass of warm milk isn't just for kids.