We’ve all had them.

Lack of potassium and/ormagnesiumin your diet also causes these cramps.

Sometimes injury to the spinal cord or a pinched nerve can also be the issue, according toWebMD.

Woman with a Charley horse

There are various theories as to why they are commonly known as charley horses.

“Base-ballists have invented a brand new disease, called ‘Charley-horse.’

(via HuffPost).

Leg cramp aka Charley horse

The second horse race theory also involves the Chicago White Stockings and a horse named what else?

Horse racing