Woo and Jr, have either of you actually tried it? As I do agree the best split is 5 days, but sometimes life does not allow us to be flexible with our schedules, so we make do with what we can. Chest and back again is not for the weak at heart, but I do like the fact I go heavy 1 week with 1 bodypart and light the next week for whatever bodypart I did heavy the week before. My back has got more separation and has never looked better. Actually try it before you shoot it down, you might be surprised. And if you have tried it and don't like it at all, thats your choice, it was just my 2 cents on the question.