Maybe I am misunderstanding what you are saying but I think you are misunderstanding what the previous poster said. He's giving you a hard time about the way you are using the word "break", To slow down would be to "brake", not "break". His point is that, when you round a corner, you don't want to "break" an arm, "break" your bike, or "break" that little old lady who's desperately trying to get out of your way.