Question

During heavy exercise we get cramps in the legs due to the accumulation of

Answer 1

Lactic acid!
Hope it helps you

Answer 2

Accumulation of lactic acid around the muscles can cause cramps but it happens during cardio exercises when the heart beat is high.

On the other hand, there is no defined reason behind muscle cramps. However, researchers and doctors say that due to dehydration, electrolyte imbalance after strenuous exercise, cramps can occur in muscles.