Originally Posted by
Looigi
It's not bikes that prolong lives, but the exercise. Riding a bike is has it's own risks. You can get the exercise in ways that are safer than riding a bike.
You need to talk to my knees. If I did the same amount of exercise by running rather than limiting my running and cycling way more; I would not be able to walk anymore.
But I guess you could consider using a wheel chair great exercise. But then again, either running or wheel chairing across an intersection is greater risk than cycling where I live.