I think DM makes a very valid point. Obesity is an epidemic, particularly in developed countries. It's no coincidence that this is so in countries like the US and Australia.

And I agree with Bikerz, there are a lot of factors, in this being so, including lifestyle lifestyle lifestyle. The way we plan our cities where we are encouraged to drive everywhere, the crime factor where we're too scared to walk down the street (in some communities we don't let our kids walk to school), the jobs that seem to demand 40+ hours a week, the material goodies we want to accumulate, and of course the list goes on....

We can do our small part to counter these trends, by being cycling evangelists! And promote the buzz we get in cycling and all the other great benefits we get including our health etc.