Previous reporting from the Citizen Times covered studies that linked these time changes to health issues like heart disease, strokes, mood disturbances, and more. Recently, the Association of Migraine Disorders confirmed that for many people, DST can be a headache - literally.

The semi-annual changing of the clocks is this Sunday when most of the country will "spring forward" into daylight saving time after more than four months in standard time. Why it matters: Lawmakers' attempts to get rid of the twice-yearly time changes and switch to permanent daylight saving time haven't gained traction.