What are muscle cramps? How do they happen? How can we recover from them? [3 MARKS]
Definition: 1 Mark
Cause: 1 Mark
Recovery: 1 mark
A muscle cramp is a painful contraction or tightening of the muscles for a few seconds.
They happen when the cells in the muscle respire anaerobically. The glucose in the muscles is converted into lactic acid, and the lactic acid accumulation causes cramps.
Muscle cramps can be cured by massages or hot water baths because it improves blood circulation. Blood supplies oxygen to the muscle cells. Oxygen speeds up and completes the breakdown of lactic acid into carbon dioxide and water.