Helps replenish lost minerals due to sweating. When you sweat or exercise, you lose water and electrolytes like sodium. Adding a small amount of salt or a measured electrolyte packet to your water can help replenish these electrolytes and promote better water absorption. This can help prevent dehydration and helps keep the amount of water in your body balanced. This is an essential if you are going to be doing any hiking or other outdoor activity in a hot climate.