Mobility Project. his blog is amazing. and although i am not a CrossFit fanatic (indeed, i've never participated in CrossFit) Kelly is obviously an amazing physical therapist and trainer.
i'm not quite sure what i would have done without these amazing exercises and stretches. the "clunk" that has been present in my left hip for about 5 months now is only intermittent, rather than with each step. i'm sure i was headed for an impingement of the joint and possible labral tear, and i am so thankful that i found this website without reaching that point. i typically lay on the floor in the evenings and do the workout of the day (WOD) in addition to some of my favorite past external hip-rotation exercises and some foam roller work.
even if you do not have any active injuries going on, and even if you do not participate in CrossFit, check out this website and dedicate 10-15 minutes a day to mobilizing your joints. you will be amazed at how much better you can perform.