belly of the muscle rather than at the attachments (your hamstring attachment points are at the knees and sitting bones). If you feel pulling in either of these areas, back off by bending your knees slightly and engaging your core a bit more diligently.
From Tabletop, walk your hands forward about two handprints, lift your knees and walk your feet back until your body forms and inverted "V" shape.
If you are unsure of your hand or foot placement, roll out briefly to Plank Pose with your wrists under your shoulders, and your hips lifted to about the same height as your shoulders.
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