Benefits of cycling?

[AllanT]

A ratio of 32:16 (2 to 1) means you have to work hard on the ups, or face the ignomy of walking, thus making very strong climbing legs.

32:16 lad?? You wimps, I climb steep hills in 53:17.. :-P

As for my mtn bike, well I rarely drop lower than the 34 ring, should really get that granny off as it's a waste of weight!!.. ;-)