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Before beginning any exercise program, evaluation by a physician is recommended to rule out any potential health risks. Once health and fitness are determined, and any or all physical restrictions identified, the individual's exercise program should be under the supervision of a health care professional. This is especially the case when exercise is used as a form of rehabilitation. If symptoms of dizziness, nausea, excessive shortness of breath, or chest pain are present during any exercise program, the individual should stop the activity and inform the physician about these symptoms before resuming activity. Exercise equipment must be checked to determine if it can bear the weight of people of all sizes and shapes.

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Science EncyclopediaScience & Philosophy: Evolution to FerrocyanideExercise - Precautions, Risks - Description, Preparation, Aftercare