>>2046061What doesn't kill you makes you stronger.
Every bump and scrape, each fracture and dislocation, the young body heals and reinforces. The young mind writes the lessons to hard drive. Every experience teaches you something, sometimes many things.
What you did wrong, what you did right, what you can improve, how you can avoid certain situations, things to look out for. Much of this learning takes place in the subconscious and in the body itself. muscle memory records effective tumble and roll techniques, not getting as badly hurt as you might becomes automatic in situations you've experienced before. Confidence emerges alongside competence.
Yes, we get older, we become less robust, slower to react and require longer recover than when we were in our prime.
But experience narrows those gaps significantly. In the same scenario a veteran of a thousand falls will fare significantly better than a first timer in his prime, not only because he'll know to avoid the situation that results in a fall, he'll instinctively do what's best when situations are inflicted upon him.