My favorites are bodyweight exercises (pushups, situps, etc.), since you can do them virtually anywhere – as long as you don't mind getting a few confused looks.

我最喜欢的是体重锻炼（俯卧撑，仰卧起坐等），因为你能在任何地方做它们—只要你不介意得到一些困惑的目光。

youdao

Tractor tires — there are lots of exercises where you flip tires, jump through them, etc.

大轮胎——有很多利用它可以做的锻炼比如说翻过轮胎、比如说穿过去等等。

youdao

Exercises for the piano, flute, harp, etc.

钢琴，长笛，竖琴等的练习。

youdao

This is a tragedy, especially with Americans presenting with significant numbers of preventable health problems that could be prevented or corrected with the proper forms of recreational activities and exercises: some forms of obesity, heart disease, mild forms of depression, etc.

BBC: School PE lesson