|How to do:
1. Using the leg press machine, place your toes and the balls of your feet
on the edge of the platform, so your heels rise in mid-air.
2. keep your knees locked.
3. Push the platform by extending the foot (toes higher than heels, calves
4. Lower the platform by contracting your foot (toes lower than heels,
5. Be very careful not to bounce the weight.
6. Repeat until failure or until you have completed the desired number of