I personally wouldn't be able to ride and imbibe, but I have noticed this phenomenon: When I am running a lot, or cycling a lot, it seems like I can drink more alcohol and feel it's effects less. I would deduct from this that the running/cycling speeds up my metabolism, and therefore, the alcohol is more quickly metabolized and the buzz wears off quicker.

I am NOT a physican, though, and I don't play one on TV either

Colleen