Begin lying on back again with arms by sides, legs bent at ninety degrees (shins parallel to mat) and ft on stability ball. Pro guidelines: Have a deeper quads extend by pushing your hips forward. This hits the rectus femoris a little more. Lean towards a wall if you find https://fernandomjvur.blognody.com/17597599/5-essential-elements-for-workout-for-womens-legs