[Dapit26]

The numbness is most likely a pinched nerve. As for the squats and leg work, does it hurt when you do anything on the sled?? If not use the sled as a substitute for squats. Clicking joints, everyone has ticks and pops, kinda like a car but if it's regular it could be pre-artheritis. If I was your doc I'd say , lay off doing anything that makes it pop but i'm not and won't..