Jillian Michaels’ passion for fitness training originates from 17 years of martial-arts practice and 13 years of personal training. Best known as the strength trainer and life coach on NBC's hit series The Biggest Loser, Jillian is a motivator to nearly 15 million viewers every week. But before she was a huge TV success, Jillian struggled with her own weight. She was determined to reach her goals — and through dedication and hard work she did. Now, Jillian serves as a role model for others who want to better themselves and achieve their own personal fitness goals.