Specialists and göttingen University studied the behavior of monkeys and made certain findings in relation to the regular meeting of men friends. Primate behaviour of a group of magoto (Barbary apes) is in many ways analogous to the behavior of people, writes Brishbane Times.
It turned out that the lack of communication with "friends" greatly increased the level of aggression and anxiety among primates. Constantly magoto with his family increased the level of stress hormone cortisol in their blood. When communicating with other Primate males stress levels in males was decreased, they became more friendly and relaxed.
Scientists psychologists advise to use the information to apply it in practice. Constant stress without the ability to cope with it can lead to serious illness and mental pathology.