Anything that gets one moving is a benefit to one's health. I find that simple gadgets can keep me motivated to exercise. For some, a simple device to count their steps is something that they use. For me it has always been the little computer on my bike that records the distance traveled and other data. There are all sorts of other items on the market like heart rate monitors, personal GPS based motivators, and apps galore. Do you use gadgets when you are exercising? Do these items give you the incentive to push a little harder or go a little further or do you see them as unnecessary toys?