Varshavski: Most Americans waste the extra hour when clocks fall back

36 minutes. That is the average amount of extra sleep Americans capture when the clocks roll back one hour on Sunday, November 1. The remainder of the additional 60 minutes is lost to routine, according to data cited by Dr. Mike Varshavski, a family medicine physician speaking to TODAY.com. The national pattern suggests that the majority of the population fails to utilize the full benefit of the seasonal time shift.

The transition to standard time marks a specific moment for physiological adjustment. While the spring forward change is known for its negative impact on cardiovascular health, the fall back transition presents a different profile. Experts from the American Heart Association note that the spring shift, which removes an hour of sleep, correlates with a rise in heart attacks and strokes in the days following the change. The fall transition, conversely, is described as more aligned with the human circadian rhythm. It does not trigger the same spike in adverse cardiac events, yet it still disrupts internal biological clocks for several days.

Dr. Varshavski argues that the extra hour offers a tangible opportunity for cardioprotection. By increasing sleep duration, individuals can lower fight-or-flight activation, reduce blood pressure, and decrease overall physiologic stress. These changes are particularly relevant in a society where sleep deprivation is common. The physician advises that gaining this sleep is not merely a comfort measure but a functional health benefit for the heart.

The Harvard Health Letter corroborates the gap between the available time and the used time. The publication confirms that "fall back" does not automatically equate to sleep gain. Most individuals do not alter their behavior sufficiently to capture the full hour. This inefficiency represents a missed chance to mitigate the mild circadian disruption that accompanies the time change.

To maximize the benefit, Varshavski recommends a proactive approach rather than a reactive one. He advises starting the adjustment 10 to 20 minutes earlier, a few days before the transition. Rather than focusing on bedtime, he suggests anchoring the routine to a consistent wake-up time. This method helps stabilize the circadian rhythm more effectively than trying to shift the sleep onset window abruptly.

The physician emphasizes a holistic view of health during this period. Alongside sleep adjustments, maintaining healthy eating habits, engaging in regular exercise, and seeking morning sunlight are key. Morning light exposure helps regulate the internal clock. Varshavski notes that these habits serve as complementary tools to manage the transition. He urges individuals to think about health holistically and use the time to reinforce other healthy habits. The goal is to use the structural change in the calendar to improve daily physiological markers.

The clock change occurs on Sunday, November 1. Standard time begins that day, adding a 60-minute segment to the calendar day. The period of adjustment lasts for a few days as the body recalibrates. The data from the spring transition serves as a benchmark for the potential risks of sleep loss, while the fall data highlights the potential for recovery. The specific number of 36 minutes serves as a metric for the current level of public awareness and behavioral adoption regarding seasonal time changes.