I have been doing the daily RX with yoga. The situation is specific to running an bending over. When I run, it feels like someone is stabbing me in the left glute (high and to the outside). After a while, I can feel pain on the inside of the thigh (more toward the quads). Then my left glute gets exhausted; followed by dull pain in my knee. Bending over, it feels like my left hamstring is forever tight.