When running, heat is produced raising the body's temperature. To maintain homeostasis, the hypothalamus initiates a sweat response to cool the body. As sweat evaporates from skin, heat gets removed, dropping the body's temperature.
Jenny's body is sweating in response to running for more than an hour. This sweating is a mechanism her body uses to maintain homeostasis, or a stable internal state, in terms of temperature. When Jenny runs, her body generates heat, which raises her body's core temperature. To counteract this, her body initiates a cooling process led by the hypothalamus in her brain. This process involves blood vessels dilating to lose heat to the environment and sweat glands secreting fluid. As this sweat evaporates from her skin, it removes thermal energy from her body, cooling it. Therefore, the action causing this homeostasis is the sweat response initiated by the hypothalamus.
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Is to be free from stress. Stress is the number one cause of disease and death. There have been many people who have lived a long life even though they don’t eat healthy or exercise. This is because they are free from stress and have peace of mind. Bob Hope and George Burns are good examples of such people.