Grace Period for Certifications: Personal trainers with an "approved degree related to the field of exercise science" will be required to take a National Personal Training Certification Exam within 90 days of employment from one of the following certifying organizations listed above. Athletic Training, Chiropractic, Exercise Physiology, Exercise Science, Fitness Management, Human Performance, Kinesiology, Nutrition, Physical Education, Physical Therapy, Sports Management, Sports Medicine.