i've been doing light sets for 1 minute rest after each set, doin 3-4 sets, 10-12 reps, for awhile now, and i've kinda read about the whole 5x5 thing, but it seems too complicating so i'm just wanderin if i should switch up to just doin heavy weights, 5-6 reps, with about 2-4 minute rest between sets? maybe for 6 weeks or so? i'm lookin to gain size