Can you become clumsier over time? - nostupidquestions - fe.derate.me kbin

Is it possible to start out at, let's say, 20 years and be sharp as a knife. Never forgetting things, never dropping things, always have an answer ready and can do multiple things at once. And then around 30 you suddenly drop stuff you have in your hands, you forget if you locked the door, your contactlenses have gone missing...