Begin on the floor on your hands and shins, with your knees under your hips, and your wrists under your shoulders. The spine should be in a neutral position, with your back flat and your abs engaged.
Take a breath in, and as you exhale, round your spine up to the ceiling, pulling your abs toward your spine, and simultaneously tuck in your tailbone and tuck your chin toward your chest. This is called Cat.
As you inhale, let your belly soften, arch your back, and lift your head and tailbone. This part of the stretch is called Cow.
Continue flowing back and forth from Cat to Cow, cycling through at your own pace for one minute.