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The challenge is "who can make their heart beat the fastest?" that's the case, I think anyone with superhuman endurance would lose. Traveling at the speed of sound wouldn't even work up a sweat for Wonder Woman. Whereas Black Canary's heart would be racing if she had to maintain top speed for more than 10 minutes.

What?

http://i578.photobucket.com/albums/ss225/OdinBorson/JeriTroll/y2jshifty.gif

I could make their hearts beat faster. mmm

Does someone using superspeed have their heart beat similarly faster...? If so, WW wins. Just start flying around the globe really fast.

And Black Canary would probably be stumbling along, wheezing with a pounding heart, after about 10 minutes.

I would think that Diana's superhuman endurance, rather than simply keeping her heartbeat slower, would allow it to pump faster and harder for a longer period of time than Dinah's could before it would give out.

Originally posted by Existere
I would think that Diana's superhuman endurance, rather than simply keeping her heartbeat slower, would allow it to pump faster and harder for a longer period of time than Dinah's could before it would give out.

Really, WW, Superman, Flash, etc. should be able to get up to pumping rates that'd make a human heart explode.

edit nevermind.

Hmm Black Canary might cover chest with her hands to feel her heart beating fast, she might wait for it to stop pounding.