TweetSissy Squats will give you a burn like no other. If you don't already have a copy, go to the bookstore and look through Arnold Schwarzenegger's New Encyclopedia of Modern Bodybuilding. On page 594 there is a picture of Tom Platz doing them. I'd tried them and they are killer on the quads. Give them a try and let me know how you like them. Also, try Front Squats. Peace.