I came across this video while messing around on youtube and it’s awesome! It’s a film of the guy who developed the world famous kimura lock for both Judo and Brazilian Jiu-Jitsu. (BTW the technique is named after him)
I think something else that’s cool about this video is that Kimura is over 60 years old and is able to show these moves (some of which are tough to do for a 21 year old)
I heard stories that Kimura trained well into his 70’s and I believe it. He was a Judo fighter but his ground game was very good unlike a lot of Judo fighters these days.
Anyhow, check out the video below, it’s pretty cool to see someone like on film.