Been riding various self-powered vehicles, fell on all except the Me-Mover. Broke some bones previously, but it's part of the adventure. Not so on this 3 wheeled scooter that is propelled by 2 transmissions that are similar to a stair stepper. Since the Me-Mover can be leaned like a trikke, the MM works the core and legs, at my late 70's my legs are the first to go, they say, not so much now since I've been riding for over a year. Legs feel stronger, maybe because you need about 20% more effort to propel the scooter than a bicycle. As far as stability and balance, the Me-Mover goes places I would never consider with a bicycle, some off-road, takes S turns at speed, leans into L turns, increases endurance, I can tell when I ride my road bicycle.