According to trainer Emeka Umeh at Fit Body Bootcamp, people can begin leading a healthier lifestyle anytime they're ready to commit. His group workout classes spur participants of all fitness levels into action with intensive strength training and cardio workouts designed to boost a person's metabolism and tone muscles. Accountability is the name of the game here, and the group setting motivates students to push themselves and each other—not only through individual exercises but toward a long-term commitment to better health. In addition to leading boot campers, Emeka offers personal-training services, conducts body assessments to chart his clients' progress, and provides nutritional advice.