If I'm not on a long tour, then I usually have one bottle of water and one bottle of Gatorade on my bike - favorite flavors are Strawberry Kiwi, or Gatorade Ice Strawberry or Watermelon.

If I'm on a tour, or even on a long day ride, then I wear a Camelbak filled with water and carry 2 bottles of Gatorade on the bike. And if I'm touring in an area where there is little or no access to water or stores, then I usually throw a couple of extra bottles of both water and Gatorade in my trailer or panniers, whichever I happen to be using. Running out of liquid on a long ride is definitely a bad idea!