The Lean Back exercise works your rectus abdominis, obliques, transversus abdominis, and inner thighs.
Next up is lean back. You're gonna have to sit on mat. Roll up a towel or blanket right up against the block. You scoop yourself, you got quarter of the way underneath your seat and then take the second block between the knees. Okay, interlace your hands behind back or behind your head, rather, and open up your elbows, squeeze the navel in towards the spine and just give a little lean back. Yeah, lean back. So starting position upright, lean back. For more of an advanced version, you can take 1 leg off of the floor and squeeze the block between the knees and lean back, lean back, lean back. Put it back on the floor switch legs. Lean back.