Ask kids to do chi kung [1] (i.e. standing almost still for 20 minutes in a row), just try :-) [1] https://en.wikipedia.org/wiki/Zhan_zhuang https://en.wikiped

Ask kids to do chi kung [1] (i.e. standing almost still for 20 minutes in a row), just try :-) [1] https://en.wikipedia.org/wiki/Zhan_zhuang https://en.wikipedia.org/wiki/Zhan_zhuang