One of Britain's leading body language experts, Robert Phipps has identified four major sleeping positions that can provide an insight into the sleeper's personality.
According to Phipps the four sleeping positions are fetal, log, yearner and freefaller positions. Nearly three in five people sleep in fetal position, which is a sign that the sleeper worries too much but is conscientious and ordered.
Those who sleep in the log position, keeping both the body and arms straight, can be viewed as stubborn and bossy.
People sleeping in the yearners' position, sleeping on their sides with their arms stretched out in front, either feel like they are being chased or want to follow their dreams. Finally the freefaller position, sleeping on the belly with arms at right angles or outstretched, suggests that the sleeper lacks control over his or her life and is doing best to hang on.