On 01/10/2014 00:23, Bret Cahill wrote:
That would all depend upon having a nice even level road.







Or a nice knobbly mountain bike.







In the



event of disaster neither of those are likely, whereas feet can climb



over things very easily and going up hill (necessary to escape tidal



waves ) is quite natural and simple on foot. I would imagine that



poor quality knee joints are not too hot for cycling in any case.







Actually my knees work quite well on a bike because their movement is



constrained by the pedals, so they tend not try to twist out of



alignment, which they can do when I'm walking, particularly on uneven



ground.



Tennis players with bad knees -- basically all tennis players over 40 -- will often cycle for knee therapy.



Stay in lower gears and cycling actually makes knees better.


Then why do so many cyclists develop patellofemoral syndrome?

They aren't spinning. Higher gears will destroy the knees for the same reason lugging down an engine 9not downshifting) will destroy the piston rod bearings.

Cyclists also need to get out of the seat every now and then to save their prostates.


Bret Cahill


You would think that 'pro' cyclists would know that by now.