blaze

[Nyamaiku]

reduce the swinging movement of his hands, and it should be perfect. i dont think anyone would run while swinging their hands like that. people swing their hands that much only while they are skipping/dashing with big strides.
eg

btw, he looks like he can run a lot faster than Firen though.

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yeah, but i think maybe 'his' right hand just need reducing movement, left seems ok have a look at the frames:

people actually do swing their arms when running and as you swing faster you run faster you should try your self you cant even run that fast if you kept you arms down you have to swing.

well, i did try it out, but it would be awkward (not to mention it may hurt our muscles) to swing the arms in a more "horizontal" way.
yes, we do swing our arms, but in a more "vertical" way for sprinting.
if we really are running(maybe while conserving some energy for fighting enemies), we would only swing it a little. more or less similar to Davis's running.

edit: just notice that Blaze looks like he can knock everybody out of the way with the current running