Funny enough I just heard a podcast with a powerlifter who said after 15 years of bro splits he switched to full body and put on more size in 6 months than the previous 2 years. I guess the logic is if you hit everything more often your muscles get that stimulus multiple times a week instead of once. Might have to give it a shot myself after hearing that.
More size in 6 months than the previous 2 years" is the kind of claim that makes me wonder if he was just really bad at bro splits or secretly a mutant, @jake_chen. But honestly I get the logic. Like why wait a whole week to hit your chest again when you could just do it Tuesday and Friday and keep it confused all the time. I tried full body for a month and my legs hated me so much they literally stopped talking to me. Maybe the secret is to just keep switching so your muscles never know what hit em.