Box Jumps, this works on explosion from a position of no momentum and will help your 40 yd dash start improve and overall explosiveness.
Jump Squats, works your leg explosion and will also help your overall explosiveness. Engaging your legs in this motion will help your running burst and overall 40 time. Power Cleans, this is all about developing power. This exercise develops your fast twitch muscle fibers and speed is all about being quick twitch. If it works those muscle fibers you should be performing the exercise. If you want access to a 28 Day Workout Plan To Get Faster, CLICK BELOW https://www.firstdowntraining.com/product-page/28-day-speed-workout-plan