Is Katana cutting a legitimate form of exercise?

Is Katana cutting a legitimate form of exercise?
youtube.com/watch?v=SKdAGi9YpHA

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This guy is a ninja

he looks less enormous

i could be seeing things though

That fat is functional tho, provides protection for vital organs.

I've actually been following this autist for a few years now. Pretty funny.

Yeah i like him, he seems nice
youtube.com/watch?v=OYWGF8Hrkg8

Dude talks like a tv character.

Straight arm dumbbell pullover is pretty much weighted sword swings

OMAE WA DA

In all seriousness my girlfriend does weapons form Taekwondo, and some of the shit they do is great cardio.

Of course most of the people in the class are far ugly weebs and that is literally the only exercise they get, but it could be a good fun way to get some cardio in if running ain't your thing.