In a fitness and nutrition certification program, you'll learn the essentials of building healthy habits, creating fitness training plans, and working with clients. Those with fitness nutrition certification can start their own businesses, work as a fitness or nutrition coach, spa consultant, or weight management consultant. It's important to note that earning a certificate alone may not qualify you for a job in the field and you may be required to pursue additional education and industry-certifications to meet the minimum requirements of some employers.