How to Help Your Body Adjust to the Spring Time Change
How to Help Your Body Adjust to the Spring Time Change
Every spring when DST starts, society suddenly wakes up one hour earlier relative to the sun.
Example:
Before DST: wake at 7:00 AM
After DST: wake at 7:00 AM clock time, but biologically it's 6:00 AM solar time
And every year, the same thing happens…
Your body now feels like it's jet-lagged by one hour
Perhaps you feel off for a few days, grab an extra coffee, push through the grogginess...
A study of hospital admissions across Michigan found a 24–25% jump in heart attacks on the Monday immediately after the spring time change, presented at the American College of Cardiology's Annual Scientific Session.
Finnish researchers documented an 8% spike in ischemic strokes in the first two days.
A University of Colorado Boulder analysis of 732,835 accidents over two decades found a 6% increase in fatal car crashes that week, roughly 28 additional deaths every year.
Sleep disruption during this period is also consistently linked to higher rates of depression, cognitive problems, and metabolic issues.
All from one hour of schedule misalignment.
Now, before we go any further, I want to say something clearly.
This guide is not here to scare you about time change
It's here because the moment you understand what's actually happening inside your body, you stop fighting it and start working with it.
Your circadian system is one of the most responsive systems in your entire body. It is constantly reading your environment. Constantly recalibrating. Constantly reaching for accurate signals to orient itself.
Simple shifts in light, food, temperature, and daily rhythm can help your biology adapt more smoothly, and turn what most people experience as two weeks of fog into a genuine seasonal reset.
That's what this guide is for.
Why Your Body Doesn't Just "Adjust"
Your body doesn't tell time by looking at a clock.
It reads light.
Morning light, sunset and darkness.
They are biological real-time biological signals that tell every cell in your body what time it is, what season it is, and which hormones to release, in what amounts, at what precise moment.
In circadian biology, these signals are called zeitgebers. It's a German word meaning "time givers."
The most powerful zeitgebers include light, temperature, meal timing, and movement.
Now, when the clocks move forward, your schedule shifts overnight. But the sun doesn't move.
Your body wakes up to the exact same angle of light as the day before. The same spectrum. The same biological morning.
But your alarm says it's an hour later.
Your brain follows light cues. Your liver follows meal timing. These systems don't reset simultaneously, and they certainly don't reset overnight.
For some people, the recalibration takes a day or two. For others, it takes one to two weeks to fully adapt.
That's not something wrong with you. That's a complex, intelligent system doing what it needs to do.
3 Steps to Adjust to the DST Spring Time Change
Shift Your Sleep Schedule Gradually
In the days leading up to the time change, start going to bed about 20 minutes earlier each night.
Your circadian rhythm is designed to shift a little at a time as the sun slowly shifts from one season to another.
Small adjustments are much easier for your body than suddenly losing an hour of sleep overnight.
By gradually moving your bedtime earlier, your brain clock begins adjusting ahead of time. This means that when the clock jumps forward, your body will already be close to the new schedule, making the transition much smoother.
Now you might be thinking…
"How can I shift my bedtime earlier?"
"It's not something I can just force."
"Even if I try, I will end up lying in bed wide awake."
And you are right.
Without the right strategy, it can be difficult.
That's why we use light signals to shift your biological clock naturally.
You will combine the power of light and darkness to signal to your body to sleep earlier and wake earlier.
Here's how:
Step 1: Start your evening light routine earlier
Begin wearing your VivaRays Evening Circadian lenses-orange about 20 minutes before sunset in the upcoming days.
This signals to your brain that the day is winding down and helps your body begin preparing for sleep earlier.
Step 2: Shift your nighttime lenses earlier
Switch to your VivaRays Nighttime (red) lenses about 20 minutes earlier than your usual time.
This allows melatonin to rise earlier and helps your body naturally fall asleep sooner.
Step 3: Get morning sunlight
Expose your eyes to natural sunlight soon after waking.
Morning light is the strongest signal for setting your circadian clock and will anchor your new schedule.
If you start tonight March 6th (Friday)
If your usual bedtime is 10:00 PM, here is an example:
| Day | New Bedtime |
|---|---|
| Friday night | Go to bed 9:40 PM |
| Saturday night | Go to bed 9:20 PM |
| Sunday night | Go to bed 9:00 PM |
At this point, your body has shifted about one hour earlier, so the clock change will feel much easier.
If you start tomorrow March 7th (Saturday)
You can still reduce the shock by shifting a bit faster.
Example if your normal bedtime is 10:00 PM:
| Day | New Bedtime |
|---|---|
| Saturday night | Go to bed 9:30 PM |
| Sunday night | Go to bed 9:00 PM |
After the clock changes
Once the time shift happens, maintain the same sleep and wake schedule you established during the adjustment period. Your body will already be aligned with the new timing.
Key Reminder: Your circadian system responds to light signals, not willpower. By using your VivaRays lenses strategically and getting morning sunlight, you're giving your body the biological cues it needs to shift naturally.
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