Of course you have to actually practice. Some of these lifts in Crossfit are kicking my ass to say the least and making my body feel more beat up than it should. Maybe it is the pace of the workouts, or perhaps actual weight-lifting, of which I have been lacking for years. Heading in this PM as I was in Monday morning but the heavy squats and then WOD took it out of me. My hip is bugging the crap out of me along with my lower back acting up. To help with that I have begun going back to the chiropractor as of last week. Been there twice already and he has put me on a weekly schedule for the time being. I hope, no it will help.