This is often an exercise I used to do with my soccer athletes. It’s a fantastic exercise that concentrates on balance as you drive your knee through and up towards your chest, which is why I recommend it for any person who runs – oh hold out, that’s all human https://econopass.com/health-and-fitness/fitness-zone/fitness-effective-workouts/10-effective-exercises-building-lifelong-core-strength-without-planks/