Knee Exercises from Usain "Lightning" Bolt

Usain "Lightning" Bolt garnered worldwide fame and attention when he won three gold medals in the 100 meter, the 200 meter, and the 4x100 meters. Recently, Bolt proved he was quick as grease lightning by breaking the 100 meter and 200 meter world records. I found this great article that demonstrates the knee exercises Bolt uses 5 times a week to keep his knees in optimal condition for racing. This routine looks good for someone recovering from knee injuries who wants to get in shape for sports. http://www.fhm.com/upgrade/mens-health/train-like-an-expert-usain-bolt-20081104