There are so many variations of squats and lunges you can do, and I'm all about mixing it up. I showed these ones to Nichole this week, and I think she gave me the two thumbs up! ;) You can do these with weight or without. Start low in a squat position and jump up as high as you can fully extending your legs off the ground. As you land, land back in your squat position and avoid jarring your knees. The deeper you land into your squat the less pressure you'll feel on the knees. Do three sets of 15 of these and you should feel the burn!