NUUN tablets with or without caffeine
Crystal Lite packets w/caffeine
Walmart packets w/lots o caffeine
Gatorade ZERO, no caffeine
I used to drink lots of the big tub Gatorade sugar mix as an uneducated hydration solution for long daily bikerides. Take a look at the label and realize how much sugar is in it - enough to change your A1C levels - take it from me.