Why when we are walking we swing our arms?

[Heavensfynest]

Sometimes you see people that swing their arms like crazy when they walk and they look soo funny lol. But why do we swing our arms when we walk?

 

[Matt]

Probably to go faster, i just tried walking with no swinging arms right now, then i tried it with. Turns out for me it makes you walk faster, lol.

 

[Syrei]

Swinging your arms while you walk helps regulate energy consumption in the human body. Holding one's arms as one walks requires 12 percent more metabolic energy, compared with swinging them.

The arms' pendulum swing also helps dampen the bobbly up-and-down motion of walking, which is itself an energy drain for the muscles of the lower legs.