There might not be anyone, but in any case!
Having gotten to #509 in updating/assigning tags to all my posts on
darksea, and having made the post that you see immediately below this one, it suddenly occurred to me that I mention the word SLEEP an awful lot, and determined to track it. So from this point on I'm working my way backwards and marking every post that mentions sleeping, lack of it, etc, with the tag "sleep". I'll finish at some point, and if I remember, I might even remark on it. I think this is kind of like me keeping track of my headaches so I can point them out to a doctor - it's something to keep a record of just in case it's important in some way.
Ironically, I don't have a "sleep" icon at all.