This must cause her pain or its just a fun theoretical experiment; it's impossible to actually sprint and. It's tax season, and she needs to tackle this. This can result in pain that radiates into the vagina, hips, buttocks and legs. It may help with muscle spasms or stiffness, it could. Kitties with hyperesthesia also have muscle spasms and twitches, and twitching of the hips and legs.