Updated: Mon, 17 Jun 2013 09:00:00 GMT | By Emma Jones
2013 MMVAs best and worst moments

Best cardio workout



Best cardio workout (© Andrew Francis Wallace, Toronto Star; Getty Images)
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  • Worst single gentleman (© George Pimentel, WireImage; Getty Images)
  • Worst treatment of a Radiohead song (© Andrew Francis Wallace, Toronto Star; Getty Images)
  • Worst risky business time (© Andrew Francis Wallace, Toronto Star; Getty Images)
  • Best home-boys (© Andrew Francis Wallace, Toronto Star; Getty Images)
  • Best cardio workout (© Andrew Francis Wallace, Toronto Star; Getty Images)
  • Best gentlemanly pursuit (© WireImage)
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Andrew Francis Wallace, Toronto Star; Getty ImagesShow Thumbnails
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Someone call a cardiologist because Demi Lovato really toyed with our hearts, first belting out "Give Your Heart a Break," followed by a musically induced "Heart Attack." Flames, smoke and confetti bellowed from the stage as Demi unleashed her powerhouse voice, following which, the award for Video of the Year was doled out by Pitch Perfect star Brittany Snow to Classified and David Myles for "Inner Ninja."

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