Downward Dog
How: Start on all fours with hands a few inches in front of shoulders and knees under hips. Press palms into bed, curl under toes, and press hips toward ceiling (body should form an upside-down "V") as partner stands behind.
Why: Similar to the forward bend, downward dog allows for stimulation of the sensitive front vaginal wall. The variation on the popular the doggy-style also engages your core.