How can I heal a tear in the Piriformis just diagnosed after several months with my Phsio. I have been applying t.e.ns. two to three times a day, with heated wheat bags, Can only do short 5 minute walks for exercise, then pain kicks in the thigh,hip, and bum. Have now started to apply gel pack from fridge, to the sore buttock, area, should I also continue with the t.e.n.s What exercises can I do to help myself heal? Is the information you give free?