"SUN RADIO"

From Secondheaven

In romaji, this is rajioo taiyou, which in loose translation means Radio Sun - or the morning report! This daily broadcast is played every morning at 6am on Japanese radio, and everyone around the country has to perform these stretches! Corporations, universities, hospitals, high schools, you name it! Even elementary children are trucked to the community level broadcast of these activities at 7 or 8 am.

Before PE classes in high school this broadcast is played, and used as a warm-up for students. So! Everyday before PE, when your students warm up, they are warming up to SUN RADIO!