How to: Lie on your stomach on a mat. Place your hands on the floor on either side of your chest and, keeping your hips flat on the mat, press through your palms to extend your arms, arching your back slightly and keeping your chest high. Hold this position for five deep breaths, then slowly bend your arms to lower your chest back to the mat. Repeat twice.
Tip: If your flexibility allows, try arching your back even more - tilt your chin towards the ceiling and curve your neck slightly rearward.
Keep in mind: If you have a weak back or are prone to back pain, it's best to skip the cobra pose altogether.