Clocks go forward early this year and it may affect sleep

On March 8, 2026 most U.S. states (except Arizona and Hawaii) will move clocks forward one hour for Daylight Saving Time, causing a one-hour overnight loss of sleep; experts say this shift can lead to short-term sleep deprivation, reduced REM sleep, and circadian disruption. The article reports that specialists reference a '7:1' sleep rule—aiming for at least seven hours nightly within a one-hour window—and mention morning light and gradual bedtime adjustments as strategies discussed to ease the transition.

On March 8, 2026 at 2 a.m., most U.S. states (except Arizona and Hawaii) will set clocks forward one hour for Daylight Saving Time. That overnight change results in the loss of one hour of sleep. Doctors and longevity experts in the article caution that the effects can extend beyond a single lost hour. The piece cites comments from Dr. Jennifer Timmons, Dr. Kevin Postol, and Dr. Daniella Marchetti about how sleep and daily timing may be affected. Reported effects on sleep: - Short-term sleep deprivation after the spring transition, reported as shorter total sleep time, increased sleep fragmentation, and greater daytime sleepiness. - Reduced REM and slow-wave sleep for some individuals, with increased morning grogginess and delayed sleep onset noted especially among later sleepers. - Circadian disruption described as a form of "social jet lag," since the biological clock does not shift with the clocks and mornings will be darker initially, affecting morning light exposure. - Some studies referenced by experts report a small, short-term rise in cardiovascular risk in the days following the spring shift, linked to sleep loss and stress responses. Summary: The March 8, 2026 clock change will move most U.S. clocks forward and is reported to cause temporary sleep loss and circadian mismatch for many people. Experts quoted in the article discuss maintaining consistent sleep timing, aiming for at least seven hours nightly (the "7:1" rule), morning light exposure, and gradual bedtime shifts as approaches to reduce disruption. The degree of impact will vary by individual. Undetermined at this time.