Shake Weight Jerking Sucks

The infamous Shake Weight—a fitness contraption that is supposed to make your arm muscles stronger and make you look ridiculously stupid at the same time—is useless, says Wired UK:

Jerking this 5-pounder only got our max heart rate up to 114, which pales in comparison to a standard weightlifting session, let alone back-to-back sets of push-ups. More importantly, after a few days of use, our muscles didn't feel nearly as sore as they do from weightlifting. And, as everyone knows: no pain, no gain.

I suspected that much but, to be honest, it is sad to know that I've devoted countless hours to an exercise that doesn't burn any significant calories. If I had a Shake Weight, I would totally return it. [Wired UK]