Want strong AND flexible quadriceps (front of thigh) muscles? 👉 Reverse Nordic Curls (aka "Natural Leg Extensions") will help with that Strong quadricep muscles are important for strong knees. Flexible quadricep muscles are important so that we can bend our knees through their rull range of motion. If you're new to Reverse Nordic Curls, start at level 1. Stack two yoga blocks between your feet; the yoga blocks serve as a target as you go through your set. Make sure glutes & core are engaged before you start to kean back towards the yoga block target. You'll feel a stretch sensation in your quadriceps muscles as you approach the yoga block target. Then, push your shins into the floor to return to the start position (much like pushing your shins into the padding of a leg extensi