HOW: Start by grabbing two dumbbells of the same weight. Take a step forward with your left leg and descend into a lung position. Push yourself back up and forward using your front left leg. Then repeat on the right side.
FEEL: You should feel all the muscles in your legs working, but especially your quadriceps muscles. Your front leg should be doing most of the lifting.
COMPENSATION: Do not push too much through your back leg. It is OKAY for your knees to go past your toes - that is normal!