While it is easy to just grab a handful of some sports chews and eat until you feel “full,” Fuelstrip works another way. These wearable strips actually analyze an athlete’s sweat levels during a workout, and then recommends the appropriate amount of sports nutrition to eat. The strips will change color from orange to yellow to green to blue based on the athlete’s glycogen depletion progresses. The color determines the number of Fuelchews needed to maintain energy. An orange strip requires one chew, while yellow requires two. That takes the guessing game out refueling.