im trying to improve my 4.9 forty yard dash but i dont have a clue on what muscles to work out, can someone tell me what a good routine is? this is the one i made up, tell me if its good or crap:
squats- 5x12 almost max weight
squat jumps- 5x15
jumping lunges-5x15
parachute running- 5x40 yards
squats- 5x12 almost max weight
squat jumps- 5x15
jumping lunges-5x15
parachute running- 5x40 yards
