Just Saying...
You know it’s time to shut down the internet and stop playing when two or three hands within a few minutes go wrong because your brain mysteriously forgets that a straight loses to a flush or misreads a 6 for an 8 giving you a weak two pair where you thought you had a poker full house. While the former might be helped some by keeping hand chart open, they both can only really be fixed by sleep.
Just saying those are some signs, should you ever need to know.
Imported from an old blog. Some links might be dead. Let me know if you find dead links.