It's like being a high jumper: you want to keep raising the bar until you knock it down, otherwise you don't know how high you can jump.

就像跳高比赛：在你撞到那条横杆之前你总是会努力让它升得更高，否则你不会知道你到底能跳多高。

youdao

In the 1968 Games, in Mexico City, the American high jumper Dick Fosbury won the gold medal by flipping himself over the bar head first and backward a technique now known as the Fosbury Flop.

NEWYORKER: Glory Days