My mental health will do this thing on occasion where nothing sits quite right. I could be having what normally would feel like a great or fine day, but nothing sits quite right. There doesn't seem to be any specific thing that brings this malaise on, but for the current one I am slogging through I did notice, in retrospect, the symptoms leading up to it. Spending more time searching for a dopamine hit, scrolling through the feeds more, watching videos I'm not even interested in. It was only when I was trying to work out, sitting idle at a rowing machine and staring at the floor in silence for two minutes before I thought "oh, this isn't normal, this isn't me."