I'm currently doing a lot of reading about daily/every other day training for a specific body part for a given period of time.
There is a dogma of 'overtraining' that exists, so much of my reading is on forums with people saying "don't do that bro lol" who have never tried it before.
Weeding through those types of posts finds success stories sprinkled everywhere. People working arms or chest daily and seeing good gains.
The dogma seems to state that muscles need time to recover and won't grow if you train them too often, but considering protein synthesis returns to baseline levels after 36 hours in natural trainees this doesn't seem to make sense. I think where a lot of this dogma comes from is people doing classic bro splits and hammering their bodies with 20-30 sets and getting massive DOMS (which are often joint/tendon based and irrelevant to muscle growth and recovery) that they still feel 4-5 days later. But what I'm talking about is reasonable volume, 30-60 reps compound and 10-30 reps isolation.
I think that for my next training cycle (starting mid-August) I'm going to train my chest every other day and reduce back and legs to maintenance levels. Will give it a solid 4-6 weeks before making any judgements.
I'm not going to listen to dogma anymore when there are just too many anecdotal stories of people having success. Johnny Bravo dudes at the gym are living proof that frequency and focus can produce results. My back is in great shape and for legs I'm mainly concerned about strength and proportion, not pure size. So I can afford to get away from total body growth for a while.