The physiological benefits of laughing are explained.

Laughing is healthy for you in more ways than one, and affects many different parts of your body including your brain, lungs, eyes, heart, and muscles according to Women's Health.

The human brain reacts to humor by activating muscle function, emotion, and higher thought along with a sending a signal to the brain stem.

The affect of laughing forces your lungs to expel air while your vocal chords create an uncontrollable series of vowel sounds, like ha ha or ho ho.

A laughing person’s heart rate and blood pressure increase as the expulsion of air from their lungs creates a need for oxygen to move faster to their organs.

If they’re laughing hard, their eyes begin to water.

Facial and core muscles flex, and the rest of the body’s muscles are harder to control, making things like walking more difficult than usual.

Laughing also affects the body’s release of hormones and brain chemicals like endorphins, and can make social situations easier.

According to one study from Johns Hopkins University, students performed better on a test when it featured funny instructions.