I thought I was pretty good at it. But my brain just fritzed on the idea that Reverse SAD would (presumably) not be related to the sunshine, which based on this here Wiki on CRD suggests might not be the case.

I've always been curious about SAD, in that I've always been curious to see if it would affect me, or not.

The good news: as a medical professional, I'm pretty sure I don't have CRD, however! of the symptoms for the intrinsic disorder, I easily recognise three at various times in the past few months. Sleep science is fascinating.

But I ramble.