Sweet Sweat Sticks are a topical gel that can help your body sweat more during exercise. Sweet Sweat works best during cardio, circuit, and high-intensity interval training. You can also use it while swimming, or if you're in a dry or infrared sauna! To get the most out of this product, we recommend using Sweet Sweat Neoprene Trimmers alongside it.Sweet Sweat is activated by your elevated heart rate and may help the body sweat more during exercise. This topical gel works best during cardio, circuit, and high-intensity interval training. Can also be used while swimming, and in dry or infrared saunas. For optimal results, use with Sweet Sweat Neoprene Trimmers.