I've heard that some doctors in Japan turn on music during surgery to calm down their emotion.
But, I've never heard those who sing or dance during that. It will endanger patients.
On the other hand, it can be allowed in psycological doctors, because they won't hurt patients physically, even if doctors dance or sing while seeing them.
How free workers are by nations is interesting.
For example, in Japan's black companies, drinking coffee or juice while working is banned, because drinking those kinds of drinks is supposed to be idle.
Like this, Japan's unreasonably strict rules in companies are the last things we can understand.
