Why people hug. Perhaps this is due to the fact that we have hands of sufficient length that we can grab the person from behind. And what, how to say feet are needed to walk, and hands to embrace.
So it is so, but I still wanted to draw attention, to the sensations that arise in a person with embraces. Well, firstly, two people take part in the process, one embraces, and the second takes these words, and every option, when two people are hugging, with an equivalent force ... We do not consider the embrace of a large number of people, since nothing special in This is not ...
From the physical point of view, during the embrace, in the "classical" form, when people are facing each other, we press the partner to the body, with the help of hands, clasping them behind behind the hug. Secondly, as a rule, we hug with close or not strangers people. With those we trust or want to believe ...
If we talk about the sensations that a person has during a hug, we can say the following: sensations of protection, coziness, security, importance, significance, certainty, reliability, care, support, attention, intimacy, warmth, permeability, participation, sympathy, pleasure, necessity,... It is not difficult to see that with rare exceptions, these sensations are related in meaning to security or protection. If we take into account that a person really has an aura or a field around his body, which protects or protects him, then we can not cope with the situation in person, in front, with us. But from the back, we are in no way protected. We do not have an eye on the back of the head. Of course, we can orientate by hearing or other sensations, but still our back is in the "risk zone". It's quite another thing during embraces. We have eyes and hands on our backs. It is not realized, but so it is, our brain perceives them as ours, as we have previously determined that we embrace, as a rule, with close and reliable people. We receive a circular defense, which gives us a state of tranquility, pleasure and relaxation.

And then, if there is an aura or a field around a person, they overlap each other, strengthening and creating around themselves a "cocoon" of protection against the outside world, which in its own way is already pleasant for us. Inside this shell, we feel relaxed and warm, not only from the proximity of the second, but from the auto-suggestion that everything is fine.
Embrace - it's nice, nice and necessary. It would be interesting to know if the animals have something similar. They are not able to embrace, but perhaps close to the body, feel the same thing as a person. In addition, hugs can tell us that this person is safe for us and we can trust him.

By own work, current photo taken by user Cybershot800i., Public Domain, Link

By Tyler McCulloch - I'm so happy man.Uploaded by Skeezix1000, CC BY 2.0, Link