Question

lack of oxygen in muscles often leads
to cramps among sportmen
conment.​

Answer 1

Answer:

yes it is true and to avoid cramps

sportmans use to warm up themselves before

competition

Answer 2

$\bf\huge\underline\red{Answer}$

This happens due to conversion of pyruvate to lactic acid.

Sometimes, when there is a lack of oxygen in our muscles, pyruvate is converted into lactic acid (a 3- carbon molecule). This build-up of lactic acid in our muscles during sudden activity causes cramps.