for me HIT is 7-8 sets per session of balls to the wall supra max efforts (maybe 20-24 total sets per workout with prep sets if you believe in them).
that is damn hard to keep up for very long.
training must be periodized :: period of heavy progressive traiing then period of lighter training so body gets a break
1 set failure per body part ;; shit training for anyone except total newbie, way supoptimal proved by science MANY years ago,, proved in gym MANY years ago,,
20 set failure ; overkill for anyone,, some peopel can get result from this trining abut uncessacary volume per bodypart,, many wont get any result from this training
middle road:: 4-10 set per body part depending on what training level you are on. failur not a must and never do all set to failure,, but yes some people can but many cant and will burn out,,
total newbie: 1-3 set via fullbody 2-3 workout per week (1-6monyhhs..sometimes 1-12 months)
intermediate 1: upper/lower 3-4 workout per week 4-8 set ,, mostly5-12 reps (1-2 year too forever depending on goals,.,)
intermediate stage 2 + advanced: many times necessary to split body in more parts...body partds worked every 5th day or pick 1-2 muscle group and specialize and work them 2x timer per week rest once per week at maintaince,, sets 4-10
