User blog comment:SuperStrawHatSaiyan/Are You Gonna Fix It, Toei?/@comment-972068-20130104225229/@comment-3119203-20130104225511

I don't think it's physically possible to do that anyways. If memory serves, the entire body is on one big blood loop, so it's hard (if not impossible) to isolate a specific area to increase blood flow to. After all, the principle of Gear Second is increasing your heart rate, and if you do that, blood flow would increase all over your body.