The Day-light helps to improve energy levels, and ease seasonal mood swings.  The Day-light also improves sleeppatterns and reduces food cravings through pleasant and uplifting ambient light.  Three 36 watt bulbs provide 10,000 Lux the same level of illumination you would experience when taking a walk on a clear, spring morning.  The adjustable legs allow the light to be angled to mimic outdoor light, and high impact polycarbonate lens filter harmful UV Rays. For use for people suffering from SAD (Seasonal Affective Disorder) This Lamp is 10,000 LUX and should only be used for 20 minutes.