Every spring, daylight saving time arrives with longer days, more sunlight, and the promise of warmer weather. But there’s a catch. When we spring forward in March, we lose an hour of sleep, and that seemingly small shift can have a real impact on how we feel and function.
As health coaches at PartnerMD, we work with members every day to address sleep challenges, daytime fatigue, and the ripple effects of poor sleep on energy, focus, and long-term health.
The transition into daylight saving time is one of the most common moments when sleep issues surface, making it an ideal time to revisit why sleep matters and how to protect it.
Public health data consistently show that the day after the springtime change is associated with increases in adverse health events. These patterns are a powerful reminder that sleep deprivation, even when it’s mild or short-term, can have meaningful consequences.
The Spring Forward Effect (What studies show)
Heart health: A Michigan hospital admissions study found a 24% increase in heart attacks on the Monday after clocks spring forward.
Stroke risk: Research in Finland observed an 8% rise in ischemic strokes in the first two days after the time change.
Driving safety: A University of Colorado Boulder analysis of 732,000 fatal crashes found a 6% increase in fatal crashes in the workweek after the spring shift, with risk highest in the morning.
Interestingly, the opposite happens in the fall. When we gain an extra hour of sleep as clocks move back, accident rates drop, and heart attack rates fall below average the following day. That extra night of sleep helps people feel more alert, focused, and resilient.
Together, these seasonal shifts highlight just how sensitive the body is to sleep changes and how closely sleep is tied to overall health.
Sleep affects nearly every system in the body. It supports immune function, hormone regulation, metabolic health, and cognitive performance.
Over time, chronic sleep deprivation is associated with increased risk of serious conditions, including heart disease, diabetes, cancer, and dementia.
From a preventive health standpoint, sleep is a foundational pillar of long-term wellness, right alongside nutrition, movement, and stress management.
Daylight saving time can expose routines that may already be fragile, but with a little planning, the transition does not have to derail your rest.
Losing an hour of sleep can feel small on paper, but your body notices. The best approach is to support your natural sleep-wake pattern with a few simple, consistent signals, starting before the clocks change and continuing through the first week or two after.
One of the most effective ways to reduce the impact of daylight saving time is to start adjusting before the clocks actually change.
Rather than losing a full hour overnight, try moving your wake-up time earlier by about 15 minutes for several days leading up to the time change. This gradual shift helps your body adapt without the shock of an abrupt schedule change. Even small adjustments can make the transition feel much smoother.
Consistency is key. The more predictable your sleep and wake times are, the easier it is for your body to adjust.
Light exposure plays a powerful role in helping your body recognize when it’s time to be awake. In the spring, morning light becomes especially important.
Getting outside shortly after waking, even for a brief walk, helps signal alertness and energy for the day. Natural sunlight is ideal, but for some people, light therapy boxes can also be helpful. These devices provide bright light that mimics daylight and can support morning wakefulness when used appropriately.
Morning light exposure can make it easier to fall asleep at night and wake up feeling more refreshed.
Morning exercise is another effective cue for wakefulness. It tells your body that the day has started and supports energy, mood, and focus. This does not need to be intense. A walk, light strength training, or gentle movement can all be beneficial.
Meal timing also matters. Eating meals at consistent times helps reinforce your body’s internal schedule. When sleep, movement, and meals follow a regular rhythm, your body is better equipped to adjust to changes like daylight saving time.
Just as mornings signal your body to wake up, evenings should signal it to slow down. Aim to begin a wind-down period at least one to two hours before bedtime.
Limiting exposure to electronic devices, stepping away from work emails, and choosing calming activities can make a significant difference. Reading, meditation, journaling, or quiet time with family are all effective ways to transition toward sleep. Screen-free activities are especially helpful, as light from devices can interfere with your ability to wind down.
The goal is not perfection, but consistency. Repeating the same calming routine each evening helps train your body to recognize when it’s time to rest.
Sleep loss doesn’t just affect how you feel the next day. Over time, repeated disruptions can influence energy levels, decision-making, immune health, and long-term disease risk. The springtime change is a reminder of how closely sleep and health are connected.
Starting early, maintaining a consistent routine, and using light, movement, and calming habits strategically can help you navigate the transition with less fatigue and more resilience. And when fall arrives, you can fully enjoy that extra hour of sleep, along with the clarity, alertness, and sense of well-being that comes with it.
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