Before you try this exercise, make sure you’ve worked through the following two previous videos:
40 – Foot and Ankle: Strength with Band
41 – Foot and Ankle: With Band and Knee Bend

This exercise will build on your calf strength which is important for activities involving impact and jumping such as running, basketball and snow sports. 

You can also work through these exercises too:
35 – Step: Eccentric Calves Heel Drops
36 – Step: Eccentric Calves Heel Raises