Whether you're living with chronic pain or just want to stretch and strengthen your back, here are yoga poses to try. While yoga isn't a good idea if you have severe pain, those with occasional soreness or chronic aches may greatly benefit from certain postures that can help lengthen your spine, stretch and strengthen your muscles, and return your back to its proper alignment. Yoga’s focus on balance and steadiness encourages your body to develop defences against the causes of back pain.