OO I'll guess... I'll say... 0.0015%.... .. .. that also might be generous...… and that no one who has just completed a marathon or 1/2 or any portion _wants_ to drink anything other than water or maybe the saltiest flavor of Gatorade or powerade that exists... seriously after a lot of physical exertion I'd far rather see a deer salt lick and a bucket of water than an infinite vending machine of anything...