spots on body from exercising

I am not sure if I'm posting in the correct forum but I was wondering if anyone could shed some light on my problem.

When I get undressed after exercising I look like I have the chicken pox!
They eventually go away but can stay for anywhere from 3-10 hours post exercise.

They dont itch, its not a rash, they are not raised.

anyone know what's going on?

Replies