Improve your mood, energy and concentration naturally with the HappyLight Deluxe Energy Lamp from Verilux. As many as 1 in 7 American suffer from Winter Blues, which is a lesser form of Seasonal Affective Disorder caused by a lack of exposure to natural sunlight. Winter Blues can affect mood, energy, sleep, appetite and more. Fortunately, light therapy has been found to be an effective, chemical-free approach to addressing the symptoms of Winter Blues. And the Verilux HappyLight Deluxe Energy Lamp provides the most studied and proven form of light therapy. The HappyLight s balanced Natural Spectrum Daylight gently helps the body recalibrate and stabilize, reducing fatigue and lethargy, improving focus, concentration and productivity. With 10,000 LUX of Natural Spectrum Daylight, the HappyLight Deluxe can also help address jet lag and difficulties sleeping and waking due to shift work.