After calculating the speed of evaporation and perspiration for my body’s water balance based on different levels of physical activities, I injected water into an IV bag and adjusted the speed of it based on how fast my body loses water. During the whole process, the device kept the water balance in my body. The water balance of an individual while resting, walking, jogging, and sprinting are intentionally kept steady. However, for the environment without a conscious mind, what is balance? We define the balance base on what benefit the human most.