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。
Do jumping jacks. Try a few sets right in your room.
可以做分腿跳。在你的房间做上几组。
Read a question sitting down, then stand and do ten jumping jacks.
坐下来读题目，然后站起来跳十次。
Read a question sitting down, then stand and do ten jumping jacks.
坐下来读题目，然后站起来跳十次。
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