If you're reading this while slumped in a chair (or still in bed), exhausted despite sleeping for over nine hours, and contemplating whether hibernation is a viable life choice, you're clearly struggling to get through winter. Depending on when you started feeling low, you might be wondering: Could this be seasonal affective disorder (SAD)? As per the National Institute of Mental Health , SAD is a subtype of major depressive disorder affecting millions of Americans. Women are diagnosed more