For years I've been drinking Gatorade, then Powerade, then Propel, etc. Not to long ago, I tried coconut water because I thought, hmm...I hate the taste of sports drinks and a red tongue! Why not drink something that taste great and still get the electrolytes? Bingo...coconut water with crushed ice. Yes, it should be chilled so I bring ice to the courts. It's more expensive vs sports drinks so I only drink it when I'm goofing off with friends and enjoying a hot day on the courts. It makes me feel like I'm at a resort club on vacation. Seems to work pretty good, even after 3-4 hours of hitting. Costco and Trader Joe's seem to have the best deals. Stop by Uwajimaya as they often have some on sale...Seems like only asian stores carry a large selection.