Why do people sweat?

Sweat glands are present all over the body. They secrete sweat and are under the control of the autonomic nervous system. Sweat consists of water and electrolytes. Evaporation of sweat results in cooling of body. Sweating may occur in relation to nervousness, excitement and on consumption of nicotine or caffeine.

Why people sweat

Sweat has a typical odor which is salty and offensive, yet sweating or perspiration serves useful function. Sweating can be physiological or pathological. Excessive sweating may also result in excessive loss of water and electrolytes resulting in dehydration and electrolyte imbalance. So let us understand the normal physiology of sweating.