Increasing force and the rate at which you apply that force will lead to major performance increases in GCT's. How much force you can apply, while minimizing braking, largely will influence the stride kinetics. Improve the 40 by improving each stride. #speed #speedtraining #speedhacks #speedtips #40yarddash #40yddash The work we're doing with our combine guys is the same programs you get on universalspeedrating -- tap in. #speedtraining #speedandagility #sprint #speedandagilitytraining #speeddrills #speedkills #nflcombine #40yarddash