Half the patients were allowed to ride at their own pace, while the others were pushed incrementally harder, just as the scientist’s tandem companion had been. All patients improved and the "tandem" group showed significant increases in connectivity between areas of grey matter responsible for motor ability. Cycling, and cycling harder, was helping to heal their brains.

via The cycle path to happiness – Features – Health & Families – The Independent.

my best thinking has always been while riding my bike, and while riding hard. the only problem is remembering what I come up with, without having paper handy to write it down…