The only way to recharge.
I moved to Huntsville AL and we don'y have an REI. I used to buy my Shot Bloks there. I bought two boxes of the Margarita (2x sodium) for long hikes (&#62; 10 miles) and long bike rides (&#62; 50 miles). I loves eating a few books. On my bike rides some of the other folks suck gel out of a pouch (yuk), and some mix powder in there water (double yuk). Shot Bloks are the easiest way to get electrolytes. Very easy to eat when you're tired and need them.
Rating: 5 stars