ProPulse® Speed Trainers reprograms your body's operating system to unlock untapped potential giving you the ability to run, move, and react with greater speed, power and efficiency —regardless of sport, age or activity. ProPulse® Speed Trainers work by converting the energy produced from your upper body (head, arms, hands, trunk) to your lower body using a "pulsing" effect. This "pulsing" effect transmits the energy typically wasted in upper body through to your lower body- generating a powerful loading effect which increases overall explosiveness, syncs up timing and balance all while decreasing your overall workload.