Prone ham curls are great but…your hamstrings do more then just bend the knee. Strong hamstrings help propel us forward, lift things, and move with speed! Hamstring strains make up a LARGE portion of sports injuries. 1/3 of hamstring strains will likely recur within the first 2 weeks of being back in play! In running, most hamstring strains happen during terminal swing, or when the leg is behind you. It has to be trained to properly handle high eccentric load to stay safe. Eccentric strength is the strength required to decelerate. Here's are some options to load up the hamstrings in different ways, where the hip is moving on a fixed knee, or vice versa.