Most people spend a third of their lives either asleep or resting, according to the Sleep Foundation. During sleep, the body recharges and repairs itself. And a good night's sleep often can be determined by what position you are lying in bed.
Back-sleepers beware.
"I know many people find it to be comfortable, because they're not putting weight on their joints," says Dr. Lois Krahn, a Mayo Clinic sleep specialist.
