<span>a hypothetical force formerly held to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, etc.</span>
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.
The factor that causes a noninfictious disease is the environment.
THE ANSWER IS INFECTIOUS AGENT THANK YOU FOR LETING ME HELP YOU