Sarah Jacoby is a health reporter at TODAY.
Daylight saving time 2024 is around the corner, and we’re about to “spring ahead.” Losing that hour of sleep along with being on a new schedule can be jarring to your body. The clocks may be changing by just an hour, but it can still have a big impact on your day — and your health. That's because the change causes a phase shift of our circadian rhythm, the body’s internal clock, and exacerbates the chronic sleep deficiency Americans already experience, Dr. Carol Ash said on TODAY.
The best evidence we have now suggests that year-round standard time “aligns best with human circadian biology and provides distinct benefits for public health and safety.” We’ve made daylight saving time permanent before: In January 1974, President Richard Nixon signed the Emergency Daylight Saving Time Energy Conservation Act into law, which eliminated clock-changing for 16 months. While the move was initially quite popular, public opinion turned later in the year.
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