@btschumy@mecfs Unrefreshing sleep is a common symptom anyway but today maybe the crash was still coming on when you went down for a nap?
There’s always a lag for me between aggravating event (standing too long, sitting up too long, too much exertion or elevated heart rate ) and onset of PEM crash, usually a day-ish. But so often it catches me up short and I’m like wtf did I do?
The hardest thing about #MECFS is gauging how I’m doing. Either I’m in pain and fog, or not. Argh!