Golf impacts - Slow motion video

Your arms don’t stay locked at 90° while you sprint. That cue has survived for years because it’s simple and easy to say, not because it reflects how sprinting actually works. If you watch elite sprinters in real time or slow motion, you’ll see the same thing over and over…the elbow angle is constantly changing. It opens slightly as the arm drives back and closes on the forward swing. In acceleration, ground contact times are longer and the goal is horizontal impulse. The legs are pushing back a