On Jan. 12, 2008, I sent the following in an email to myself, probably intending to post it on this blog, but apparently never got around to it. (I came across it while attempting to clear out my gmail inbox -- which is currently holding more than 8,600 messages, the oldest one dated March 13, 2006...!)
In T's office it is acceptable to nap at your desk. It's okay to nap
anywhere, really. Taxi drivers nap in their cars; I've seem some
people asleep on the bus and on the subway. As long as you remain
sitting up or standing, it is socially acceptable to snooze.