Instructions
Position yourself on a Stairmaster so that your core is braced and your back is flat. Keep your chest up along with your gaze. Set the Stairmaster to the appropriate program and begin.
Lift one leg up after another, focusing on the quadricep muscle (front of the thigh) pushing your body weight up.
Move at a slow pace while maintaining good form. Refrain from hunching over or placing all of your weight on the side bars.