Training, Recovery & Adaptation (Supercompensation principle) 

This channel is amazing

Channels gonna blow up

Shit I might do that this weekend

The typical recovery time frames for human musculature and energy reserves is well-researched, it's not THAT much variation But yea, if u have a high-protein diet, the results are gonna vary compared to someone eating more balanced, or carb-heavy. Or if you're not eating enough each day for your body to recover properly, or just eating like shit in general. Or the athlete lifting with bad form. Not paying full attention to proper drilling. Being lazy about the workouts. Things like that can also affect results. But then that's not rly a problem w the system itself. In general the system applies to everyone who does it properly and if you arent inclined to be lazy sometimes, like myself, its really not hard to listen to the body and say objectively "am I too fatigued, can i go to jiu-jitsu and roll at 100% or should i take it easy today?" Etc. The difference in recovery for most people without major handicaps (injuries, really old, 6"7' 350 lb genetic freak, etc) is realistically gonna be a matter of like, a day or two working relatively light after going all out for a day, 2 days a week lifting heavy instead of 3, nothing crazy tho IF you know how to manage urself and ur training schedule