Question

When a sportsman owns he gets muscle cramps why 0?

Answer 1

Because he had cheated the game.

Answer 2

This is because of the formation of lactic acid in the muscle cells which forms when there is lack of oxygen in these cells.When a sportsman is running he is not able to breathe properly and there is lack of oxygen in the muscle cells which have to respite in this condition where there is a lack of oxygen thus they give out energy + lactic acid.The build of lactic acid in our muscle cells causes cramps.