Advice from The Modern Cyclist, 1923 (Cycling for the Unsound)

CYCLING FOR THE UNSOUND.

"Cycling is quite a successful treatment for a much large number of ailments than is generally realised. It is, unfortunately, not often prescribed by doctors, most of whom are now motorists--partly by the necessity for time-saving, and partly for social "swank." If your bicycle is dear to you, and a doctor tells you that you must give it up, do not rest until you have found another who is also a keen cyclist."