apparently not moving your arms while you run improves stamina but take that with a grain of salt, i got that from a youtube video of a "ninja master" who was reacting to naruto clips.
animemaru.(com)/scientists-find-that-running-like-naruto-actually-faster/
Here's the article the post is talking about, gotta remove brackets cos of link detection.
if it conserves energy, still doubt as swinging of the arms helps keep momentum, hold arms out back and leaning forward, would use more energy. But conserving would mean endurance, not speed
Actually, there is a reason this type of running is prevalent in anime. For one, it’s much more silent. Secondly, it absolutely does conserve energy, allowing for a push to attain a slightly greater speed. Finally, the caveat to all this, is that you actually have to be trained in the arts for this to be an effective way to run. Weebs from the USA who are just imitating the style will not, of course, be able to fully reap the benefits. Imagine a young Star Wars fan waving about a lightsaber with no regard to the art of stage combat...of course it looks silly, and is ineffective. You all are basing your arguments off observation of complete novices. When do you think you will ever witness a true master running this way? I’d say it’s unlikely. I know this from researching various arts, not from watching anime. That is the difference in credibility.
Here's the article the post is talking about, gotta remove brackets cos of link detection.