Walking up flights of stairs is great for your tush, but stepping up onto a chair is a more effective move since the step height is greater. Make sure you're using a stable and sturdy chair that can support your weight without sliding. If a chair feels too high, use a sturdy stool or a bottom stair.
- Stand in front of your chair and place your left foot in the center of the seat.
- Step up onto the chair and bring your right knee forward and up.
- Lower yourself back to the floor, with the foot landing quietly.
- Switch legs and repeat to complete one rep. Do 20 reps total.
Here are some more variations of the basic step up.