20 Minutes to Fitness is different. Using scientifically based strength-building methods, they make it possible to achieve in one weekly, 20-minute session what might require three or more hours a week in a traditional fitness center. You will train under the watchful eye of your personal fitness coach on high-end MedX equipment originally designed for use in physical therapy. Depending on the studio at which you train, your coach might be a physical therapist, registered nurse, exercise physiologist, kinesiologist or certified fitness professional.