What is the primary mechanism by which red light therapy is believed to exert its therapeutic effects?
A. By increasing the body's production of melatonin to improve sleep quality.
B. By promoting cellular repair and reducing inflammation through the absorption of light in the red and near-infrared spectrum.
C. By stimulating the release of endorphins to alleviate pain and stress.
D. By enhancing the absorption of essential vitamins and minerals through the skin.