Why does the heart beat faster when you see a stranger?

Barking is a natural part of dogs and is capable of expressing a variety of different meanings. >>>More

Be careful! Be vigilant, it's a lot now!

Don't be too wordy! Protect yourself! >>>More

Because I didn't know each other and couldn't play together, I felt embarrassed every time I saw a stranger. If I see my brother or a classmate, I can go up and hook him on the shoulder and talk to him. But strangers give me the feeling of loneliness and no company around me. >>>More

Some people have a special appearance, or they look more vicious, or they always look like others owe him hundreds of millions, or they have an indifferent temperament, and their aura around them is showing one, don't get close to me, you have a very unpopular temperament. Children are generally afraid of these people, after all, children are sensitive many times, and they will choose how they treat others according to their aura. However, if the child happens to have an acquaintance, relative, friend, etc., and there is something similar to this person, or if the child has been helped by such a person and has good memories, the child will have a cordial familiarity with such a person, and will be willing to be close to it, rather than afraid. >>>More

See more people.

When it reaches a certain level, it is natural to feel it. >>>More