honestly, i don't believe any of this
Do you associate with a lot of powerlifters? Ever talk to them about how they feel the week after a meet where they set a few PR's?
Or do you generally just feel heavy low rep work isn't taxing, rest a few seconds and you're ready to go again?
Ever do a grinding set of deadlifts with maybe 6-7-800lbs?
Ever do a set of squats with maybe 500lbs to failure where the spotter actually has to grab you on the last one? Ready to go again after 2 minutes? More like 10-15 minutes just til the ears stop ringing and heartrate is below 100.
Some call low rep to failure training high
density training instead, a more apt term perhaps. It's so taxing you can't do a lot of it. You can train real hard, real dense LOL, or train long. I remember that fool Poliquin saying this about Mentzer type training:
His system requires only a fraction of the time required by most other programs, but it's difficult to do it for more than a few weeks because it requires that the trainee be either mentally disturbed or addicted to amphetamines in order to keep up the degree of effort required.
Anyone doing twice daily workouts for 2 hours at a time is not training hard, it's certainly not intense/dense, and it's not training to failure each set, no matter what they claim. If you can balonie around with your pals between sets or text bitches it's not hard... it's just long.