Super easy/lazy way burn some lbs. I bought it 3 weeks ago to augment my attempts at rowing and lifting at the gym. I'm averaging 150 cal per hour. I am using the tether strap from my chair to the bike since I have slippery floors. The down side is that my chair is locked to my desk. It is great while on the phone or surfing. A little difficult to use and type.
Carrie Underwood uses it as an aid. If that matters.