Got to bed late because I just had to finish a story arc in NWN. Then had trouble sleeping because I'm sore from a workout Friday morning. Then had a nightmare. Then sleep addled brain began thinking that my anxiety after the nightmare was a sure sign I was having a heart attack, since I had just read last night that many heart attacks only have "sense of impending doom" as a symptom. So 4.5 hours of sleep today it is.
My brain is kinda like this sometimes.