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Originally Posted by
Rambo 
Tried the stretch with the foam roller last night. Interesting twist but I don't think it added much to the actual stretching of the flexor.
A common fault is to arch your back when doing this stretch. Your psoas will be shortened, and won't be stretched. Try to keep a neutral back, and keep your abdominals contracted (the same feeling as when you cough). On the other hand, from what you say below, it may not be your hip flexors that need stretching.
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I have limited flexibility in my hips. I can't cross my left leg over my right without swinging it up first or using my hands. I think its why my lower back keeps rounding when I squat. I feel them tighten frequently and I think it affects my piriformis and glutes as well. Those are probably overly tight also.
Do you mean when you're sitting, and trying to cross your legs? If so, that's pretty damned inflexible. There are several yoga poses that address this, like pigeon pose, and some of the seated twists. The problem is finding a good yoga teacher who knows body mechanics and isn't too new-agey. Professional dancers who also teach yoga tend to be pretty good, but there are still duds.
Another thing to do with your foam roller is to get your piriformis on the foam roller, and then cross your legs so that one ankle is on the other knee, and then roll up and down the muscle, holding at the really bad parts. Try to use your whole body weight, and as hard a foam roller as you can stand.
The holding the deep squat thing (I think Starrett wants 10 minutes in it) also helps a lot of things, and it's helped my squat go lower, though there is still buttwink, but I wouldn't worry about that.
--Andre