America's Biannual Time Change: Embracing the End of Daylight Saving Time

Tue Oct 28 2025 05:44:50 GMT+0200 (Eastern European Standard Time)

As the clock springs back this weekend, experts highlight the health implications of changing times and the importance of morning sunlight for a smoother transition.

As daylight saving time ends and clocks fall back this Sunday, most Americans will enjoy an extra hour of sleep. However, health experts warn of the potential negative impacts of time changes on our circadian rhythm. Research advocates for the adoption of year-round standard time to align better with our biological clocks. Families are encouraged to embrace morning light to ease the transition and regulate their sleep patterns.

This Sunday at 2 a.m. local time, most of America will officially switch to standard time, allowing everyone to gain an extra hour of rest. Despite the benefit of a longer sleep duration, some experts emphasize the effects of this biannual time change on our overall health.

Daylight saving time (DST) causes a disruptive clock shift that many find difficult to adjust to, particularly in the spring when we 'spring forward'. The unintended consequences of these time changes can result in sleep issues and disorientation, impacting productivity and health.

Recent studies, particularly from Stanford University, have corroborated long-standing arguments for maintaining standard time year-round. The research indicates that shifting back and forth between time frames negatively affects our circadian rhythms, the internal clocks that regulate daily bodily functions. As Jamie Zeitzer, co-director of Stanford’s Center for Sleep and Circadian Sciences, illustrates, our biological systems work best when aligned with natural light patterns.

Health organizations like the American Medical Association have advocated for permanent standard time, noting that consistency helps keep our biological rhythms in sync with natural light and darkness. The importance of morning sunlight can’t be overstated; it helps reset our internal clocks, ensuring that all our body's 'instruments', or organ systems, function in harmony.

As people prepare for the time change, they are encouraged to gradually adjust their sleep schedules in the lead-up to Sunday. Simple adjustments, like waking up and exposing oneself to sunlight, can promote better adaptation and overall health.

While various states do not observe DST—such as Arizona and Hawaii—discussions around the nationwide need for a time policy change continue to evolve, as seen in the stalled Sunshine Protection Act aimed at making DST permanent.