Upward Facing Dog:
Traditionally, this pose provides a great stretch for the back again. While it still will in this workout, we want to focus a little less on the strong stretch in the back because we're heading to hold it for a full half a minute.
Lie on your chest with your hands bent and your hands flat in the grass. Slowly drive up until the hands are straight below shoulders. As you do this, lift the knees and hips up off the ground.
The palms of your hands and tops of your feet are the only parts of the body that should be coming in contact with the floor.
You can low fat back into the shoulder muscles somewhat to improve the stretch out in the back, but don't force it too much or you will tire yourself out before the half a little is up. Instead, give attention to drawing strength from the core to hold the pose.