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.
anaerobic. 1  of or produced by anaerobes. 2  able to live and grow where there is no air or free oxygen, as certain bacteria. 3  designating or of exercise, as weight lifting, that increases strength, promotes weight loss, etc., but does not increase cardiovascular efficiency.