Knee Jump Progressions

I came across a discussion thread on Rossboxing on knee jumps. I regard the flying knee as one of my favourite techniques in muay thai so naturally this exercise caught my interest. It is designed to improve one's jumping ability. The person in the clip shows a variety of knee jumps beginning with the basic progressing to a variety done with different weights. The various knee jumps looks quite fun to do. I'm definitely going to incorporate this to my training regime