Getting a cramp while swimming is the worst that could happen to us people. I think the best answer here is to relax, float and massage the cramped muscle because, if you try to keep swimming the muscle could tighten more and could get out of hand and could cause you to drown.
Hello there,
The answer to yourn question is 3-5%
Hope this helps :))
~Top
Well you attain Emotional Maturity when your full-grown emotionally.