While it doesn't require upper-body strength, Bow Pose will increase flexibility in your spine, open up your chest and shoulders, and massage a stressed belly. I know what you're thinking: it looks a lot like an upside-down Wheel.
- Lie on your belly. Bend your knees, and hold on to the outside edge of your right ankle and then your left. Once you have a firm hold on each ankle, try to keep your toes together, either pointing or flexing your feet.
- Lift your feet up as high as you can, and shift your weight forward so you're resting on your navel instead of on your pubic bone.
- Hold for five deep breaths, and then slowly release.
If you need more details, check out how to do Bow Pose here.
Source: Laughing River Yoga