Guys, I'm training a few high school football players for next season. The goal is to improve their explosiveness/acceleration. I researched sled sprints and most camps recommend unweighted sprints after using the sled to "trick" the body. From your personal experience, which is the MOST effective way to see the effect for acceleration? 1.) Sled Sprint x 15-20 yards wait 30-45 seconds then 15-20 yard unweighted sprints. Take 2-3 minutes rest and do it again for 5-6 sets? Or 2.) Sled Sprint x 15 yards with 1-2 minutes rest between sets for 5-6 sets. Rest 2-3 minutes then do the unweighted sprints for 5-6 sets?