physiological phenomena

Sweating is a normal physiological phenomenon of the body in humans and warm-blooded animals.

Sneezing is a reflex that is hard to control. When people want to sneeze, it's hard to hold back. Usually, most people sneeze only once, but some people have to sneeze to 2 even

Most of life, at least sometimes we encounter a startling situation when we sleep, but do not know what really causes.