I am slowly learning to pace and beginning to understand what may trigger fatigue. I rested most of the weekend, and had a good, albeit busy day at work. I was tired by the end of the day so rested as soon as I got home. I then made the mistake of doing some school work for about 40 minutes in the evening, in preparation for a meeting today at work. That tipped me over the edge and I realised as I walked gingerly to school today that I had hit a wall. I told my boss, said I would prepare a simple lesson and tell my classes I was unwell and to be kind to me!
5 minutes later , cover had been sorted , a colleague drove me home and I am now in bed, where I shall remain for the day.
It was the work I did last night that was too much, as it was more than I would normally do. I have been teaching music for 22 years so can do that standing on my head (probably not sensible with PMR!) but the concentration last night used up my reserves. Lesson learned.....