Instructions:

1. Stand with your back against a wall and your feet hip-width apart.
2. Slowly slide your back down the wall until your knees are bent at a 90-degree angle.
3. Lift your right foot off the ground and bring your knee towards your chest.
4. Lower your right foot back down and lift your left foot off the ground, bringing your knee towards your chest.
5. Continue alternating between lifting your right and left foot for the desired number of repetitions.