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Tainya Clarke can have a physically active job, but certainly, if one is out as a contractor, aspects of being a fireman or firewoman, such jobs have physical aspects to them in a way that sitting in a job do not, but there are virtually no jobs out that require the heart to be elevated continuously at more than 100 beats per minute and also strengthen the muscles in a way they do in leisure-time physical activity that includes both aerobic and resistance activity.