User blog comment:Guts!/Anime Depiction of Luffy's Gear Second/@comment-8823907-20130528150712

If Oda went to such detail to explain gear second (meaning the pumping of the blood) i asume he wanted to keep the ger second believable. If Luffy pumps his blood in one part of his body no matter how mutch control he has over his body the effects will be visable on other parts of his body. So i would have to side with the anime depiction on this one.