Up here in the PNW, S.A.D. is pretty common. Seasonal Affective Disorder his a lot of transplant residents about 2 - 3 years after moving here. My solution is to hit the tanning beds for 3 - 5 minutes a couple times a week when we get into a long (10 days or more) spell with no sunshine.
Riding helps, but sometimes the "sunshine" is the only solution for me.
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"I feel like my world was classier before I found cyclocross."
- Mandi M.