I did the stretching exercises for the first time and noticed that this is what we do in Japan! Its called Radio Taiso ラジオ体. The exercises are pretty standard as well as the music. In ACNH there is one exercise that is not present, but the music is very similar. (⌒▽⌒)

Cultural exercise: Japan radio taiso

Los ejercicios matinales de Radio Taiso - Japonismo

Radio Taiso, a ginástica japonesa | Curiosidades do Japão

Rajio Taiso - Radio Calisthenics - Samurai Tours

Radio Taiso: Japan’s Century-Old Morning Exercise Ritual for Health and Unity — Stephanie Ellison