My feedback loop focuses on the idea of personalizing aerobic workouts for intense exercisers by measuring your metabolic changes as you work out. This idea is based on biosensor prototypes created by the Wang lab group from UCSD. Read about their research here. Secretions from sweat as you exercise is measured through screenprinted electrodes. Information such as respiration rate, lactic acid build up in the muscles, and loss of important blood ions is sent to an application that helps you keep track of your metabolic rate. This app will notify you the optimal times during your exercise to rehydrate or take a break, creating a more personalized workout plan.