| http://www.w3.org/ns/prov#value | - That???s why we are proud to introduce the 24 Hour Fitness Exercise Guidelines to provide advice and examples of exercise activities, duration and intensity that might be most appropriate for your age and fitness level, both at and away from the gym.These guidelines were developed in consultation with Rear Admiral Susan Blumenthal, MD, former U.S. Assistant Surgeon General and national health expe
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