Why a clock change feels "jarring," even when sleep is gained
On CBS News, sleep expert Shelby Harris explains why standard time suits the body clock and offers practical ways to adjust.
Why this story? The video opened at a pace of 277,594 views a day, 16 times a normal first day on this channel (17,343).
Sleep expert on health impact of "jarring" daylight saving time jumps
Things we can learn from the video
Press to jump
- 0:50Harris says standard time provides morning sunlight that helps regulate the body clock.
- 1:27She describes increases in heart attacks, strokes and car accidents observed around the spring clock change.
- 2:04Adjustment tips include staying up slightly later, limiting late caffeine and getting morning and afternoon sunlight.
- 3:12Parents of young children and people with insomnia can face particular difficulties with the change.
- 4:13A light carbohydrate-and-protein snack is fine before bed, Harris says; avoid heavy or acidic meals close to sleep.
Shouldn't an extra hour make the clock change easier? Shelby Harris explains that the disruption comes from making the jump at all: our bodies adjust gradually to sunlight, not abruptly to a different clock setting.
The sleep expert's CBS Saturday Morning interview drew about 158,000 views in nine hours on CBS News, far beyond the channel's usual first-day audience for regular videos. In the comments, viewers discuss morning walks in daylight, earlier evenings and whether clocks should stop changing altogether.
Harris, a clinical associate professor at Albert Einstein College of Medicine, says health experts prefer standard time because it provides more morning sunlight. "Darker in the evening, but our bodies need that light in the morning to help actually keep our circadian rhythm in check, our body clock," she explains.
She also distinguishes the autumn adjustment from the spring jump, when she says increases in heart attacks, strokes and car accidents have been observed. Her practical suggestions for falling back include staying up a little later, getting sunlight in the morning and afternoon, and avoiding too much caffeine late in the day.
The conversation eventually reaches a smaller bedtime dilemma: whether to eat. Harris says a light snack combining carbohydrates and protein is fine, while a large meal belongs well before bedtime.
A private medical school in New York City and an independent degree-granting institution within the Montefiore Einstein Health System.
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What viewers say
I love getting back to Standard Time when I can take an early morning walk in the daylight. I wish we could stay on Standard Time.
@GaryBrown-h9mSee it on YouTubeLove the time change. I love to cuddle up early in the fall and winter and stay up later in the spring and summer.
@mhenry4248See it on YouTubeWhat if we just adjusted the time we start standard work hours and school hours
@hollandholySee it on YouTube
1 more comment
it takes me a month to adapt
@mdubb4855See it on YouTube
Public comments from the video's page on YouTube
- Channel
- CBS News
- Subscribers
- 7,120,000 ▲ 10,000 this week
- Channel views, last 7 days
- 13,245,337
- Channel views, pace per day
- 797,061 (on a normal day: 2,480,341)
- Video published
- October 31, 2026
- Video views so far
- 158,115 (less than a day online)
- Video views, pace per day
- 277,594
The numbers
The interview has already drawn a much larger audience than CBS News' usual first day for a regular video, with comments also arriving unusually quickly.
💡 Test your knowledge
In which season do clocks move forward for daylight saving time?
The spring change advances clocks, while the autumn change returns them to standard time.


