Develop EXPLOSIVE Upper Body Strength - 4 Exercises to make explosive gains! . . Being able to be powerful and explosive through the hips is key to making a difference out on the field. But we shouldn't be just working on this during the pre-season, but the off-season is key! The reason for that is so that we can go heavier in weight and train our athletes to move a lot of weight very quickly! Then once you unload all of the weight to get into pre-season/in-season, your players are going to see