🚨 The ONE Speed Drill Every Youth Athlete Should Be Doing: JACK HAMMERS ⁣ ⁣ 🙋🏽‍♂️Most parents have never even heard of Jack Hammers — but this drill is a game changer for developing elite speed in young athletes. Why? Because it trains reactive strength and ankle stiffness, two critical factors for faster acceleration and quicker change of direction. By reducing ground contact time and improving the stretch–shortening cycle, athletes can apply more force into the ground in less time — which i