I have contracted some infection which causes my muscles to be soft and flaccid. Also markedly increased urine output. He increase in uop was one of my first symptoms. I work out a lot but can no longer build muscle. It seems there's nothing to fill my muscles with and they remain flaccid. I believe I am chronically dehydrated as well. Labs reveal no abnormalities. My Vit d is low however. I think it's a gi tract infection but stool tests have been neg. I know I can also transmit this to others.