Planning a first-time trip to the Phoenix area and would like advice about the best time to visit with regard to the weather. I want to enjoy sitting by the pool, swimming, etc, as well as do some hiking and typical tourist things. However, I would prefer to avoid the extreme heat. Hide.
Medical Definition of aerobics. 1  1singular or plural in construction : a system of physical conditioning involving exercises (as running, walking, swimming, or calisthenics) strenuously performed so as to cause marked temporary increase in respiration and heart rate. 2  2: aerobic exercises.
Energy systems key terms. Term. Definition. Anaerobic. Means production of energy through processes that do not require oxygen. When applied to exercise, anaerobic refers to all exercise that does not rely on oxygen to help produce energy. Aerobic. Means production of energy through processes that require oxygen.