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.
aerobic exercise a type of physical activity that increases the heart rate and promotes increased use of oxygen in order to improve the overall body condition. ballistic stretching e's rapid, jerky movements employed in exercises to stretch muscles and connective tissue. Buerger-Allen e's see buerger-allen exercises.