Purely anecdotal, but I work in 911 dispatch

And for a few days after the clocks change it always feels like we get a bunch of calls from/about people acting strangely.

My pet theory is that a lot of people with mental health issues are either really dependent on taking their meds at certain times, or just really need a steady routine to keep them stable, and in either case shifting things by an hour throws that all off.

And not for nothing, I work nights, and when I work the clock change, it’s nice when I get to work 1 hour less, but it absolutely does not make up for when I have to work an extra hour.