I feel lazy enough, sitting around reading or working on a novel or a web site all day, and then on top of that, I get all tired. I only feel justified in exhaustion when I've actually done some real work that involved muscles besides my fingers. Could it be that hard thinking (regardless of its quality) really does cause a physical demand for sleep?

• What's a den? What is this place?
• Where do I post my comment?
• Where's the site map?
• Hey! That old post isn't under the same date/tag anymore!
• Full FAQ