Our muscles are constantly expanding and contracting when our legs are in motion. Sudden and involuntary contractions of our muscles are known as leg cramps.
Leg spasms can strike at any time—often when you least expect them. Whether your cramps are caused by exercising without warming up or carrying heavy weights, muscle cramps are often not a cause for concern.
Getting a leg cramp, or as it's more commonly known, a charley horse, can be excruciating. One moment you’re walking or jogging and enjoying yourself, and the next, it feels like someone slipped a knife into your leg muscles.