My father and brother used to have flying squirrels as pets, but this does not look like any flying squirrel I have seen. To start with, it’s a black squirrel.
Black flying squirrels are in Asia. So, this video is either in Russia or Malaysia or Indonesia.
https://animalia.bio/black-flying-squirrel
It's an Asian video.......
The squirrel was trying to do bench presses but no one was there to spot him......