i am constantly amazed when i read articles about people who say you should be in and out of the gym in 1 hour or less. i would really like to know how this is possible especially when you're training multiple body parts. if you're training with heavy weight ( 80%-1RM) and performing really low reps you need volume to induce a hypertrophic effect. i would like to know how you can be effective if you're only in the gym for 1 hour. i follow chad waterbury's principles so the 1 hour theory seems rather hard to comprehend.