you can really tell the times when Arnold went off juice... he really went off. No "cruising" like bbs today do
Yup. This was pretty much true of all the guys from the 60s and 70s. They were as concerned about side effects as they were gains and (in general) didn't overdo anything like they do today especially like today and the previous twenty or so years.
This probably would account for some of the tremendous results they had when they took the stuff and their far longer lifespans when compared to idiots like McCarver.