Be comfortable, loosen up. I always do jumping-jacks before I… I shoot my videos. Good.

不要拘束，放松点。我一般先做几次杰克跳，然后再开始录视频。很好。

youdao

Of course, you can do jumping jacks, crunches and other simple exercises without any equipment at all.

当然，你也可以做杰克跳、仰卧起坐等不需要任何器材的简单锻炼。

youdao

If you can, retreat to a place where you can blow off some steam by doing a few jumping jacks, sit-ups, push-ups or stair sprints.

如果可以的话，去一个人少的地方，在那里你可以通过几个开合跳，仰卧起坐，俯卧撑，跳台阶来宣泄压力。

youdao