2xactivationaffectbodybuildclusterconsiderdoesnelevatedexerciseexercisesfatiguefrequencyfullgrowthincreaseinsufficientlonglowermakematchingmuscleneuromechanicalperprogramprogramsreallyrepsselectionsetssleepsplitsstrengthstudytraintraininguppervolumeweekworkworkoutworkoutswrite