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 would like to get my hamstrings more bulk. My quads and calves are ripped, but I feel like my hamstrings aren't as strong as them, or at least don't look as strong. I can leg curl 160 pounds though ...