I recently started taking parkour lessons and after a full day of vaulting and jumping around, the area around my hip flexor (or possible the hip flexor itself, I'm not a doctor) hurts. For some ...
I'm an avid bodyweight lifter, and have been working legs with squats, lunges, half pistols, etc for a long time. I feel that overall my leg strength is not lacking. I'm trying to figure out why my ...