- Begin in Mountain Pose.
- Keeping a straight back, fold forward hinging at the hips.
- Inhale, coming halfway up, as pictured below. Elongate the spine by bringing the crown of the head forward and tailbone back.
- Press your lower ribs back and cave in your belly as you exhale and fold again.
It is not necessary to fold completely in half with straight legs. Far more important is to maintain a flat back. If that means you have to bend your knees because there is not enough space in the hamstrings, then by all means bend your knees.