Fuelstrip: The Litmus Paper for your Sports Nutrition Refueling Needs
Aiming to remove the guessing game from refueling, Fuelstrip has created a product that detects the metabolites in your sweat and then tells you exactly how much refueling is needed. That refueling comes in the form of their Fuelstrip branded chews that are specifically formulated to match up with the results from the test strip. An orange result means you eat one chew, yellow equals two chews, green means three, and if you hit blue (meaning you are burning muscle at this point) you better consume four chews to keep going. The idea here is to keep you in the fat burning zone, and to keep you properly fueled for the best results from your workout.
Their starter pack includes two vials of test strips and three bags of chews. It is estimated to last you two to three hours of physical activity and costs $12.