http://goo.gl/tazdES
Step Outside
Even on cloudy fall days, the strength of outdoor sunlight is still many times brighter than anything you'll experience indoors, shows a paper from McGill University in Canada. By spending at least 30 minutes a day outdoors even during the cold winter months, you may offset the seasonal drops in serotonin. More research shows walking in nature—especially with other people—is also an effective way to beat back depression.