13 DIFFERENT SINGLE LEG HIP BRIDGE PROGRESSIONS (45 seconds) The SINGLE LEG HIP BRIDGE may be the most important exercise to help you overcome hip, knee and back pains as you progress into lunging/running type movements. Here is why: (1) Most problems with hip, back and knee have something to do with a weak glute muscle. (2) This exercise is great because (like during running) your FOOT is in contact with the ground. There are many ways to "activate" glutes but ideally we want to use exercises t