noong tayo ay bata pa... musta na ngayon...?

When I was a kid, I can climb any trees everywhere to pick fruits, small, big, low even barely impossible to reach. But do you think I could do it nowadays..? maybe FAIRLY NOT, am not as agile compare as a kid. I may just slips on the trunks or if unlucky might fall down. I guess I've forgotten how to climb.
Also, in my teenage days I could manage to drive a BMX bike with even four more like me riding in it, now i cant imagine to do it once again. Like before, I could accomplish a hundred press up, now I barely make ten.
How about you, is there something similar like this you use to do very well as a kid & now you can barely do it or not at all?