If the distance is less than one inch in couples during sleep they become happy. Toward each other by touching the back of the couple and Sleep, they are most comfortable. A study of the psychology department at the University of Hertfordshire in the UK came up information

A survey of nearly 1,100 couples in the results of his research, Professor Richard Weizmann said, touching each other and that more than 90 percent of the Sleep is very happy couple. But the happy couple in their 68 percent Sleep avoid touching each other. According to wisemen study, 4 percent of the couples Sleep back to each other.
They wrap themselves in any manner with each other and they never spoke closely Sleep. The open nature. The professor said, and in most cases they indefinite suffer Sleep walking. They can not accept the criticism concerned the nature and easily. Sleep and the knee flexion and they have less ability to make an extreme position.