In a 2011 study on red light therapy and cellulite reduction, women ages 25-55 were divided into two groups: some did treadmill exercise + red light therapy twice a week, while the other group just did treadmill exercise. The researchers presented thermographic photographs of the changes in thigh circumference and cellulite to demonstrate that red light therapy and exercise was more effective than just exercise alone. The study concluded that treadmill exercise and red light therapy in conjunction can improve body aesthetics.