作者: Susan Sommers

Susan Sommers got serious about fitness in her late fifties and went on to complete two marathons and ten half-marathons. She is an author and expert in marketing who has spoken at universities and conferences, Lululemon Athletica and Running Room retail outlets, and fitness retreats.Theresa Dugwell has completed over twenty marathons. She operates Psy Metrics Professional Services, a psychological-assessment-services company. She is a member of the American Psychological Association, the Association for Applied Psychophysiology and Biofeedback, and the Canadian Psychological Association.