Grab underneath the feet, and hold the
soles of the feet together.
Pull the spine up.
Apply Neck Lock.
Bounce the knees, coördinated with the breath.
Variation:
In some kriyas, it calls for bending
forward, lengthening the spine. As with all forward bends, do not lead with
the head, initiate with the navel. As you exhale, draw the navel in and
up.