My boyfriend is 20 years young an he had came home last night from work....i had heard his deep breathing i woke up in an instand, looking at him he was shaking like he was cold and he looked like he wanted to collapes...he didnt take a shower nor was it cold at all i grabbed him before he had fell n layed him on the bed..he was in pain i had asked him whats the matter he told me he had came home from work sat down on the computer all the sudden he had a charlie horse...and his whole body began to shake...when he had told me this i helped him take a hot shower after he still had pain on his knees