High-Sodium Hydration Drink Mix is an EXTREMELY high sodium mix designed for those times, and only those times, when you are unable to replace all the fluid you are losing through sweat any other way. How does it work? It has a ton of sodium in it, that's how. More than an entire bag of potato chips, in fact. Which is why it's not for everyone. This isn't for sipping on the couch, it's for when you're about to spend some serious time and energy in the pain cave.