Found one Secret of the Pros

[RightWingNutJob]

Yes, the whole discussion about racing a dog up Mt. Ventoux got me thinking. Could their be something to this whole discussion.

Behold this great discovery. http://www.proplan.com/products/Performance_DryDog.html

Higher Oxygen Metabolism
Concentrated nutrition to help optimize VO2 max, so active dogs can burn fat more efficiently.

I wouldn't be surprised if the pros were shoveling this stuff into their mouths by the truck load.