Many athletes and clients struggle with hamstring muscle activation. A normal quad to hamstring ratio would be 3:2, but studies often find that subjects tend to be closer to 2:1 (especially females). This diminished ratio can increase knee injury risk with jumping and cutting sports. Some people struggle with proximal hamstring tendinopathy related to overuse. Incorporating eccentric hamstring exercises in your training can markedly improve hamstring strength and activation patterns. In this video, Brian Schiff demonstrates.