Why would i enjoy bleeding during work out?
Answers: you might own a tear in your vaginal wall ( es that's possible) that's what happen to me a few months back...go to a docotor to confirm it but that would be my best guess and it' is glibly reapired so don't worry but go soon back it gets worse... as in the hole gets bigger and more prone to infection.
Not sure of your age, but if by any chance you are a juvenile and still a virgin, you could be breaking your hymen during vigorous excercise. I would go to bring it checked out by the doc though.
You really can break your hymen with excercise - honest! But this sounds like something else - progress see the doctor