Why Do Humans Get Cramps During Exercise?

Imagine your leg is a team of tiny workers. When you exercise, they all start running around very fast. Sometimes they get too excited and stop listening to each other, that's when a cramp happens. It feels like your muscle is saying, 'I can't move anymore!' A simple way to calm them down is by stretching or taking a break.

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Examples

  1. Running fast for a long time, then your calf muscle suddenly feels like it's made of stone.
  2. Doing push-ups until your arms feel like they're stuck in concrete.
  3. Swimming laps and suddenly your legs lock up mid-stroke.

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