Hello, I've encountered a problem a bout a week and a half ago, where my hip bone hurts when I try sprinting. I don't really know how it happened, but I was at track practice, and my 4x1 team was practicing, and after about the 3rd full speed one, my hip was killing me to the point where I was hobbling. I rested it for about a week, and I can jog fine now without any pain, but right when I start sprinting, it kills me. I'm part of the A team 4x1, so they really need me and I can't be hurt. Please help.