Experts from the us Mayo clinic found out what posture is to sleep the most harmful. It is reported portal Bustle with reference to relevant research.

According to the results, sleeping on the stomach is bad for the health. In this position the man can’t breathe. In addition, in this state, aching neck muscles, which is harmful to blood vessels. It also bent back, which puts more pressure on the internal organs.

Previously, doctors from the European society of cardiology have determined the optimal duration of healthy sleep.