Question

What is the cause of cramps after excessive physical exercise

Answer 1

this is because of formation of lactic acid in our muscle

Answer 2

Cramps are also caused due to dehydration, muscle strain, holding in position for a long time. After a strenuous exercise muscles experience lack of oxygen. In the absence or insufficiency of oxygen, they respire anaerobically thereby producing lactic acid. The accumulation of lactic acid causes cramps in muscles.