After spending hours on your feet, much of your body weight translates to the sacroiliac (SI) joints. Strengthening the supportive muscles of these small joints is key to optimized function of your hips and low back. Beginning in a supine position, using props for support, practice a series of body aligning movements that focus on creating balance and strength. Move onto standing postures, then return onto your back, feeling the effects of refined body awareness. Props Needed: A block. Props Suggested: A bolster and a strap.