You definitely can go balls out on every set for 10+ easily. You could for 20+ but that would be quite a lot. I recall seeing a guy in the gym and in the 60+ mins I done about 8 movements for upper body he was training his bi-ceps the entire time. Set after set and very hard. That to me is completely pointless but some people do that and their best body part is usually their arms. Going off on a rant a bit but just trying to highlight training high volume doesn't make your gains disappear. I am nothing special but I used to train all out for 2+ hours 5 days per week. That would include loads of warm ups but approx 15 working sets many days. Again unneeded and might even go against you but as I have stated in the past I don't just train for gains (I like to push myself and I enjoy the gym). I have done 10+ failure sets for arms for years in the past. I would do stuff unilaterally so I could past failure for some sets. These days my bi-cep and tri-cep workouts are literally 2-5 failure sets twice weekly so much lower volume. I probably train my arms 30 mins per week now.
True good points. Some things to consider..
If someone is really going balls out, many sets to failure, I'd assume they are taking 3 minute plus rest periods. Sure someone can do sets to failure at 30 seconds, but imo they won't be recovered from that first balls out set, so their training is starting to look more like Myo reps or rest pause then new sets with those short rest periods.
If they are doing actuall straight sets, balls out, taking ample rest time, 3+ minutes, doing warm-ups, that workout is going to take quite a bit of time
Just in my experience it's hard mentally to focus for over 1.5 hour. In the first 15 minutes of a workout the intensity is there, but by the 90 minute mark no matter how tough we are it's hard to keep that same intensity and focus.
I'm actually trying to bring arms up I plan to do a regular bro split. The arm day will be 6 tri 6 bi, heavy focus on moving weight. Then on chest day and legs day (2 parts I'm not too worried about) I'll probably just do 6 sets of the main body part and then spend 10 minutes at the end just hitting arms with volume. So something like this..
Chest 6 sets + extra arms high rep
Back traps 6/3
Legs 6 sets + extra arms high rep
Off
Arms 6bi 6 tri sets, heavy progressive overload
Delts - mix of heavy and high rep
Off
Really focus on arms, chest and legs do less so Total gym time isn't crazy. Have a delts day in there by themselves as I want to hit them good. Thoughts?