We spend about a third of our lives in slumberland, but many people complain of not sleeping well. If you have a tough time falling asleep or you toss and turn in the middle of the night, try exercising during the day and limiting alcohol and caffeine a few hours before bedtime. But if you are doing this already and still have troubles, here are three things to do immediately before hitting the hay to calm your body and mind and help you get the restful night of sleep you crave.