: Not everyone participates. Regions like Hawaii , most of Arizona , and several U.S. territories stay on Standard Time year-round.

The concept of being most often refers to the shift from Daylight Saving Time (DST) back to Standard Time in the autumn, colloquially known as "falling back". While it is often celebrated as gaining an extra hour of sleep, the reality involves a complex mix of physiological impacts, historical debate, and even romanticized pop culture. The Logistics: Why We Fall Behind

In most of the United States, clocks are set back one hour at 2:00 a.m. on the .

Though typically marketed as a "free hour of sleep," experts from institutions like Harvard Health and the Mayo Clinic suggest the transition is more disruptive than beneficial: