Today my girl did Kempo X from P90X. Having watched a lot of boxing as a kid with my dad I could see she was punching from her shoulders. I told her to think of martial artists. You can see well-developed quads, even on boxers, because that’s where their punches start from. Real power incorporates the whole body. She felt the difference immediately.
Stretching is vital to my daily schedule. Have a program based on my experience doing P90X last year. every morning before I do anything else I stretch, work out, and take a hot bath to release any tight muscles. It’s made me more flexible and pain-free than I’ve ever been.