So I battle with small injuries all the time from Jiu Jitsu/BJJ and Lifting at the Gym..... My Knees had starting feeling " Good " so our gym just got a stair machine and I had been wanting to add some more cardio.....uggg I walked 10 Min... The next day I had a Pain in my ASS ! all the way down into my Calf ......I have been trying to stretch to help but Moth'a Fucker hahaha ! I am tight every where.... Never had this problem before.....IT has been going on 2 weeks now. any Advice ? thanks in advance.