ANyone else work at a desk all day and have trouble with general tightness with the illipsoas hip flexor group? I've noticed I have to do tons of warmup and static/dynamic stretching or on squat day, I cannot get a good motion on the start up the negative because I cannot load the weight back onto my hips/glutes since these muscles are so damned tight from working a sedatory job. With these hip flexors refusing to extend from tightness, the negative will almost always make me fold my back instead of squatting back into my hips/glutes which means no power and no stability. Sprinter's stretch works somewhat (have to almost bow and arrow it) but are there any alternatives? Anyone sit on one of those big swiss balls instead of a chair?