Im 17 years old, i play highschool football, linebacker, defensive end and tight end.
My lifts are
Box parrallel squat 405
My question is, i want to add some real big size to my legs and add some real big poundages on my squat and deadlift. But I dont want to get much bigger in my upperbody, but i still want to get stronger in the upperbody.
So what weight and reps should I do to achieve this?