Being from the mid west you have to manage cold and heat and I've always found the hot humid summers a considerable challenge. I tried all the electrolite products in the local technical running stores but none worked to keep this heavy sweater hydrated and from developing muscle cramps hours into an endurance event. Eventually a work colleague and seasoned ultrarunner from the early days of ultrarunning who cut his teath in the dry Utah desert suggested S-Caps! and what a difference it made. I go aggressive with the usage (2 every hour as directed) due to being a heavy sweater and the results are good as dehydration and cramping are rarely an issue anymore.