The surface you run on has a distinct effect on how you run!! 🤔 Surface qualities have a direct link to our muscle-tendon actions which can strongly influence running efficiency and injury risk! 🤕 On hard and stiff surfaces, like the road, our body softens its natural spring which leads to larger joint ranges of motion (more knee bend). On softer and compliant surfaces, like a track or trail, our body stiffens its springs, leading to smaller ranges of motions in our joints. This stiffer spring