"Nothing is impossible"
Please don't jump off a cliff without a good hang-glider! Many things can be done by aiming high, but please be careful to remember actual reality can be dangerous.
Yup, that's a good point. Nothing is impossible, but we're bound by the limits of a human body and mind, by the laws of physics and all that.
A man can't get pregnant, you can't go out into the outer space without a space suit, a person can't reach the speed of light, because our bodies will not survive this and we could go on and on, but let's be more down to Earth. If nothing is impossible, why don't you break some records?