one of the fun things I forgot about a new workplace...

Listening to everyone who walks by my office ask me what that thing is on my desk.

I have S.A.D. (Seasonal Affective Disorder), and for me I mainly get really really sleepy.
I use a light box in the mornings to make the sleepiness go away. I start early, around August. And until late November/early December I can get all the light time I need done at home before I leave for work.
In the last couple of weeks though I've had to bring my smaller travel light box in to the office to do my remaining light time.

And of course everyone is asking me about it.
It's really rather amusing.

My head boss knew what the light was for (his wife is a psychiatric nurse & they replaced all the flourescent lights in their house with special full spectrum lights for the same thing).

One coworker asked 'oh is that for that depression thing'... she knew generally what it was for.

But most everybody else has/had no clue. They ask what I'm doing, if I'm getting a tan, if I'm going blind from looking at the light, and etc. But mostly they just ask what's that, or what am I doing.
Then I go into my rote explanation "I get sleepy in the wintertime because the sun goes away, so I sit in front of this thing in the mornings and it helps wake me up".

I do *not* like labeling myself if I don't absolutely have to.