End of Daylight Saving Time: How to Adapt Quickly (and Why it Affects Sleep, Energy, and Shape)

In early November, we turn our clocks back an hour. We gain an "hour of sleep," but sunset comes earlier, which often disrupts circadian rhythms – the biological "clock" that regulates sleep, energy, appetite, and mood. Below, you'll find scientifically-backed, practical steps you can implement immediately.

Note: some of these ideas are inspired by the work of neuroscientist Andrew Huberman and modern research on the role of light, temperature, nutrition, and movement on circadian rhythms.

What Happens When the "Clock is Turned Back"

Circadian rhythms are approximately 24-hour cycles that coordinate when the body is awake, when it releases hormones, when it's strongest, and when it's time to sleep. The abrupt change in light in the evening (earlier sunset) and morning can disrupt this synchronization, leading to:

• difficulty falling asleep/waking up;
• fluctuations in mood and motivation;
• increased appetite/desire for sweets in the evening;
• lower energy and concentration during the day.

5 Key Steps for Quick Adaptation

1) Get Morning Light (within 30–60 min. of waking)

Morning natural light "resets" your internal clock. Go outside for 10–15 minutes on a clear day (up to ~20 minutes on a cloudy day). If you wake before sunrise, turn on bright lights at home and go outside as soon as it's light. No sunglasses during these minutes (glasses/lenses are OK). This supports evening melatonin secretion and facilitates falling asleep.

2) Get Afternoon/Sunset Light

Late afternoon and sunset act as a secondary signal to the retina and brain: "The day is ending." 10–20 minutes outside during this period increases tolerance to artificial lights in the evening and reduces the risk of being "roused" before bed.

3) Limit Artificial Light After Sunset

Blue-green light spectrums and bright overhead lighting in the evening can "trick" the brain into thinking it's still daytime. Dim the lighting, use lower lamps (desk/strip lights), activate "night mode" on screens (warm/red tint), and keep the bedroom as dark as possible.

4) Maintain Consistent Sleep/Wake Times

Aim for a window of ±45–60 minutes each day – including weekends. Consistency stabilizes the circadian rhythm, reduces the time it takes to fall asleep, and improves sleep quality.

5) Use Temperature, Nutrition, and Movement

• Temperature: bedroom around 19–20°C; a warm shower/bath 60–90 minutes before sleep with subsequent cooling facilitates falling asleep.
• Nutrition: shift your meal times to the new schedule (without "rushing" too early). Each meal should contain a protein source for satiety and stable energy.
• Movement: regular activity (especially morning/midday) improves deep sleep and daytime alertness.

What You Gain When You Adapt Properly

• faster falling asleep and less frequent nighttime waking;
• higher morning energy and concentration;
• better control over evening appetite;
• better recovery from workouts and a more stable mood.

Frequently Asked Questions

How long does it take for the body to adapt after the time change?

Usually 3–5 days with good morning light and limited evening light. For sensitive people – up to a week.

How much morning light is "enough"?

10–15 minutes on a clear sky; 20+ minutes on a cloudy day. Even on cloudy days, outdoor light is stronger than indoor light.

Can I use a light therapy lamp?

Yes, if you don't have access to natural light. Look for ~10,000 lux, placed at a safe angle, without staring directly into the source.

Is there a "best" time to exercise during this period?

The most pragmatic approach is when you can be consistent. Light activity in the morning/midday often helps with earlier sleep onset.

Warning: never stare directly at the sun or strong light sources. Consult a specialist if you have eye conditions, are pregnant, or have other medical conditions.

Conclusion: use light, a consistent routine, and basic sleep, food, and movement habits to benefit from the time change: better sleep, more energy, and better recovery. This is also the philosophy of GetMorePower – not just products, but a system for a better life.