Rajio taiso (ラジオ体操), or “radio exercises” is an integral (if slightly dorky) part of Japanese culture. You’ve probably come across it even if you don’t live in Japan – it pops up all the time in anime and movies (I myself first stumbled upon it in Studio Ghibli’s Omoide poro poro (おもいでぽろぽろ) or “Only Yesterday”). [...]