so like the human body like the intention was never like oh yeah john's gonna you know john's gonna go through like six months of rehab every few years and like stop sprinting stop squatting all the way down stop you know what i mean like like all these stops then lead to all kinds of other ramifications like you have a knee surgery with modern training you're now effed to that degree in like a bunch of different ways unless you now train all these deviations from what your body's naturally supposed to be like