Question

why do we cramps after heavy exercises. ..in our muscles

Answer 1

One of the major reasons why we get muscle cramps after heavy exercise is dehydration. ... Heavy exercise causes youto perspire immensely and during summers this perspiration increases even more. Dehydration also causes you to lose potassium, sodium, magnesium and other vital minerals and salts from the body.

                                                                                                        -Anirudh11q

Answer 2

Due to lack of Oxygen in our muscle cells.
C6H12O6---->C3H4O3------>C3H6O3
Formation of Lactic acid...