Guest post by Lina Jamis Snow-lovers, rejoice—winter is here in full force. Compared to the summer months, the days are significantly shorter, which for some can mean the onset of the "winter blues." The medical term for this is Seasonal Affective Disorder (SAD), a condition caused by a mélange of changes in our biological clocks, serotonin levels, and melatonin production, all of which affect our mood. While many of us are familiar with SAD, there are, in fact, people who ge