Cat/Cow. Start on your hands and knees, wrists aligned under your shoulders, knees separated and positioned under your hips. Lift your belly up and in so your spine and neck are relaxed and elongated. Inhale deeply, then exhale as you round your back, dropping your head down and curling your tailbone under, lifting your navel toward your spine to Cat pose. Inhale and reverse the spinal curve of Cat pose: Lift your tailbone, draw your shoulders back and raise your chest to let your spine soften into your body as your belly sinks softly toward the floor to Cow pose [shown]. Continue to slowly go back and forth between Cat pose and Cow pose up to 10 times—linking Cat to each exhalation and Cow to each inhalation—before you move on.