<Snipped quote by Techspert>
Surely there are some things the human body just isn't physically capable of. It's impossible that anyone can reach such a height without some sort of predisposition to it, like you and your super extreme adaptability thing.
Believe it or not, a lot of those fade away once you start going interdimensional. You're superhuman at that point and can grow in all sorts of ways. For some, you'll have to find the right people, but for others, you can train yourself to get better; even in terms of raw physical strength, you lose pretty much all semblance of a cap at that point and can kind of just keep getting stronger without bulking up much if you're willing to put in the work.