YORK, Pa. — It happens every year — the clocks fall back, and suddenly the world seems darker earlier. For many, the change isn’t just about losing an hour of daylight, it’s about losing a little momentum.

Nora Ilyes of York County described the shift plainly.

“When I woke up, I thought it was 5 a.m. but it was 6 a.m. … but it was really nice.”

Another resident, Branden Smith, said the early sunset takes more than daylight away.

“I wake up and I’m seething that I don’t see the light.”

While those comments might sound like everyday complaints, doctors say they point to a real phenomenon tied to our biology. Psychologist Dr. Tony Ragusea of WellSpan Hospital explains how the internal clock in our bodies — the circadian rhythm — plays a big part.

“It has to do with a dysregulation in ou

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