There was a thread in the Road Forum with a bit of a discussion about this weight gain after long rides here:
http://www.bikeforums.net/showthread...eet-and-ankles
In that thread, I like to this site ... the Ultra Cycling site:
http://www.ultracycling.com/siteindex.html
Also, if you scroll down through the articles on that site, you'll see several on topics like:
- bloating
- dehydration
- drinking too much
- electrolytes
- hyponatremia