|Although he has trouble walking, this Parkinson's disease patient can ride a bike flawlessly|
Here is an absolutely amazing video. A guy who had Parkinson's disease so bad he couldn't walk without aid, swore that he could ride a bike. They went to the parking lot and he showed that he could ride with no problem. The effect seems to last. Dr. Alberts of the Cleveland Clinic took a friend with Parkinson's on a tandem bike ride. The video shows his hand shaking wildly before the ride, and steady as a rock afterwards. Nobody understands why cycling has this effect, but there is ongoing research at the Cleveland Clinic to find out.