Thanks for asking this, I've been wondering myself. I started out as a water only or 50% water 50% gatorade drinker before/during and a chocolate milk after, but have been trying some other stuff. Heed, Nuun and EFS all seem to upset my stomach a little bit, as did Recoverite. Think I'm gonna stick to my chocolate milk for after but still exploring other options for before/during... any suggestions?