Brief Summary: This project will identify the efficacy of whole body skin wetting aimed to attenuate excessive elevations in internal body temperatures during physical activity in well-healed burn survivors The investigators will conduct a randomized crossover design study Non-burned control subjects subjects who experienced burns covering 20 to 40 of their body surface area and subject having burns 40 of their body surface area will be investigated Subjects will exercise in heated environmental conditions while receiving no cooling or whole body skin wetting