An easy way to shape up without any effort? Hardly. According to Time online, the Power Plate uses whole-body vibration (WBV) to contract muscles 30 to 50 times per second. 'The continual vibration causes you to tense and relax your muscles as you try to keep balance,' the site says. 'Even without the vibration, you would involuntarily tense and release just to hold the pose. But the WBV forces you to do so up to 50 times more.' The best approach is to perform the same exercises as you would otherwise such as squats, triceps dips and push-ups. According to the site, your muscles tire more quickly using the machine, so the exercise routine will be shorter. 'This is not a magic bullet that helps people lose weight without doing anything,' says Cedric Bryant, chief exercise physiologist for the American Council on Exercise. 'If you're a healthy individual, WBV training should be a supplement to a sensible diet and exercise program.'