Step up
This one will work your hamstrings and calves on the up leg and the quad on the stance leg.
Step up, and then pull back with your heel without actually moving it. At the same time, bend your stance knee slightly. Now repeat on the other side.
This is a great exercise to improve your leg strength.
Disclaimer:
The information, including opinions and recommendations, contained in this website is for educational purposes only. Such information is not intended to be a substitute for professional medical advice, diagnosis or treatment. No one should act upon any information provided in this website without first seeking medical advice from a qualified medical physician.