What is the reason of cramps in legs?

Menstrual cramp is a common problem that occurs during the beginning of menstrual period. What could be the reason for this?

Which of the following porcess is respondible for cramps in the muscles of sportsmen ?

In a group of buffaloes and ducks,the number of legs is 24 more than twice the number of heads.What is the number of buffaloes in the group? (a) 6

What is the area of the largest rectangle that can be inscribed in a right angled triangle with legs oflength 3 and 4?

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

Assertion Prawn have walking legs . Reason Prawn can swim with the help of walking legs .

Paheli participated in a 400m race competition held at her school and won the race. When she came home she had mixed feeling so joy and pain as she had cramps in her leg muscles. After a massage she was relieved of the pain. Answer the following questions related to the situation What can be the possible reasons for the pain in her legs?