The One Day Program is an old one but can be a goodie, when approached the right way. The original version only required a light set (1 or 2 at the very most) of tricep/bicep exercises SS'ed each hour. You do not want to do forced reps, go to failure or have an extended arm workout. The idea is to have a slight pumped supply of fresh blood throughout the day. You do not want to put a great demand on the CNS, that's why the 1 hour workouts are short and light. Doing 10 reps, if you feel like you could do 1 or 2 more, than do not. Just get and maintain that arm pump all day long with those lighter SS's.. Between 6 (at the least) to 8 (at the most) times on that workout day. Old BB'ing saying, "More blood, more muscle".
Probably better to rely on a more liquid form of nourishment when doing the actually program. Easier on the digestion while keeping the main supply of blood (Blood/plasma circulates in the stomach/digestive area quite a bit with a heavier meal) in the arm area, where it is needed. Whey , amino caps, flaxseed/Omega oils, etc. In any case you want the calories (the good kind) high to meet the demands of this style workout. Most of you guy's know what to eat with something like this.
Might try single joint arm movements rather than compound ones.
Triceps: Skull crushers, French press, rope/'V" bar pushdowns, etc. Do not want CGBP, dips or other compound movements.
Biceps: Incline DB curls, Close grip (elbows glued to th sides) curls, Behind the neck lat machine curls, DB concentration curls, etc. No chins, up-right rows, etc.
These are SS'ed of course. Some finding suggest that a muscle group will recovery better/faster with SS's. Take at least 3 days before and after this type system. You can measure the arm that day, the day after or whatever. But to confirm a lasting muscle gain, measure 3 to 4 days later. If you get a lasting 1/8 gain, that is good. If you get 3/8's or more, as a select few have in the past, than that is exceptional.
Remember to measure with a thin steel tape and the first thing in the morning, not any later when the arms can pump up doing normal things.
This type one day program also works very well for the calves. Guy's have even used it for the delts. In any event, it seems to work better with smaller muscle groups. Will it work for everyone. NO, nothing ever seem to do that. No magic bullet in lifting. But what do you have to lose, one day and that's it. Some will do this special workout 2 or 3 times a year when gains seem to hit the wall. Good Luck.