Every day almost every person on earth sleeps, yet many questions remain about this state of suspended consciousness and what it actually accomplishes.
We still don't know why we need shut-eye every night, just that we do.
Different myths and explanations have sprung up about all aspects of sleep, from dreams to what it is our bodies do when we're not conscious.
Many aspects of sleep are individual. We differ in the amount of sleep we need and in what can either help us drift off or keep...Full Story