Dehydration is one of the most common and most underestimated risks in the outdoors. It does not announce itself dramatically. It creeps in quietly while you are focused on the trail ahead, and by the time most people recognize it, they are already behind. Whether you are backpacking through the desert Southwest, hiking a humid summer forest, or spending a long day exploring somewhere like Monument Rocks in Kansas or Agua Fria National Monument in Arizona, knowing how to spot and respond to dehydration early can keep a great day from turning into a bad one.
