Wow, 13 years, that's crazy. I can't imagine. I've been on prednisone for just 8+ months, am due to get to 0 in 18 days, and I hope I'm at zero for a long time. I'm constantly tired. I've been drinking coffee almost every day and I don't even like coffee. I'm very much looking forward to possibly getting better sleep. But at the end of the day, I'll take bad sleep forever over PMR pain all day every day 🙂