Place your weight back on your heels and make sure your knees don't go past your toes. You should look like you're trying to sit in a chair. Great for working out hamstring, quads, and butt.
Lunges: Keep upper body straight with shoulders back. Bend both legs at a 90 degree angle and do not let knee touch the floor. Great full lower body workout.
Dips: Great for toning the back of your upper arm, no more teacher arms;) Keep chest up and open, and do not let butt touch the ground. Elbows should be close to your side. Bend elbows to a 90 degree and then back up.
Incline Push Ups: All push ups are great for your arms and back, but an incline push up will target the chest area more. Simply perform a standard push up on an elevated surface. (This can be done on a chair, bed, or coach:))