Activate water molecules and improve the oxygen absorption Improve the circulation Stimulate the metabolism, balance the acidity Consume your energy, burn your fat, reduce your weight.(Alma) Red light Efficacy: exciting and warm, stimulating and revitalizing the cells,improving the heart beats, brain activities and respiration Yellow light Efficacy: stimulating the nerves, increasing the blood pressure, speeding up the pulse, reinforcing the immunity and digestion. Blue light Efficacy: you feel cool and refreshed, relieving the pressure, reducing the blood pressure. balancing and focusing your mind. Green light Efficacy: This natural color has comfort and calm curative effects on your anxiety and depression, you feel relaxed and relieved..syi