Exercise physiologists can help you plan an exercise program to aid in your weight-loss efforts, but they should not dispense diet advice. An exercise physiologist holds a bachelor's degree with an emphasis in exercise physiology. In addition to basic science courses, exercise physiologists study human anatomy and physiology, biomechanics, cardiopulmonary rehabilitation, exercise physiology, sports nutrition, electrocardiography, stress tests, and research and statistics. They also take a variety of specialized courses.

In the near future, the American Society of Exercise Physiologists Board of Certification will adopt a national certification test for all graduates of an approved exercise physiology curriculum. A certified exercise physiologist will then be allowed to use the initials C.E.P. after his or her name. In the meantime, the American College of Sports Medicine (ACSM) certification is available to any professional within the preventive and rehabilitative exercise field who meets the established prerequisites.

Exercise physiologists go through six progressive levels of ACSM certification. Each requires a written exam to test knowledge and a practical exam to measure hands-on skills. After earning ACSM certification, an exercise physiologist must participate in continuing education and maintain a current CPR certification.