NNNNOOOOO, my leg muscle cramped

Today i played badminton 4 an hour, then went 4 swimming, when i was swimming backstroke halfway, my leg muscle cramped, luckily my good fren benjing helped me wif my leg, finish watching China Open men doubles final still pain, lol la. :( . But good news, i finished all the tenderfoot camp letters edy, so not so stress anymore, haha