I’m not so sure. He frequently goes shirtless on vacation and enjoys the Russian martial art Sambo, which is basically wrestling and rolling around on the ground with other men.
Sambo?
That is racist
There’s a lot of self defense techniques in Sambo (Cambo in an imitation of cyrilli). I took it for a time and it was pretty neat. You may be referring to sanyo. Sanyo is the Russian name for judo.