If we think about the spine, there are 3 main planes of movement: flexion and extension, (arching-rounding), side-bending, and twisting. I’d like to focus a little about twisting. Twisting is where our power comes from. As upright mammals without massive muscles in our jaws (think crocodiles) or paws- who’d want to be swiped by a … More How easily does your back move?