Say Hello to Fall with a Circadian Rhythm Reset

The first day of fall, September 22, signals shorter days and cooler temperatures. These seasonal changes can disrupt your circadian rhythm, the roughly 24-hour cycle that governs sleep, wakefulness, energy, hormone secretion, body temperature, and even appetite. Many living organisms, from humans to plants and bacteria, rely on this internal clock to regulate physiological processes.

The Science of Circadian Rhythms

Your suprachiasmatic nucleus (SCN) is a tiny structure in your brain that acts as your body’s master clock. When light hits your eyes, special cells in the retina send signals to the SCN. This master clock then orchestrates nearly every cell in your body, controlling melatonin (your sleep hormone), cortisol (your stress and energy hormone), and overall alertness. Other factors, like exercise, meal timing, and temperature, also influence your internal clock. When your circadian rhythm gets disrupted, it can affect sleep, mood, metabolism, and even focus and memory (Blume).

As the seasons change and daylight hours get shorter, mornings can feel darker, which may delay your body’s natural wake-up signals. Less natural light can increase the risk of circadian rhythm sleep-wake disorders, low mood, and trouble sleeping. Evening exposure to artificial light, such as from screens or LED bulbs, can further interfere with melatonin and make it harder to get restful sleep.

Reset Your Circadian Rhythm with Norb Wellness Lighting

Norb provides scientifically designed lighting solutions to help stabilize and reset your circadian rhythm:

• NorbSMART: An app-controlled light bulb that can be set up on a schedule to simulate natural sunlight patterns, with cool, bright light in the morning to energize and boost mood, and low-blue, soft light in the evening to prepare for sleep.
• NorbEVERYDAY-SUN: Full-spectrum lighting that boosts alertness, mood, and daytime energy even during shorter fall days.
• NorbSLEEP: Reduces blue light in the evening, supporting melatonin production and restorative sleep.

Using these lights strategically can help reset your circadian rhythm as needed, improve sleep duration and quality, and elevate mood. Research shows that morning bright light exposure, natural or artificial, can advance your clock and improve sleep timing, while evening light exposure can delay it (Blume). Even intermittent exposures as short as five minutes can have a meaningful effect.

Light, Mood, and Sleep

• Mood: Light influences neurotransmitters like serotonin and helps stabilize circadian rhythms, which can improve mood and reduce symptoms of Seasonal Affective Disorder (SAD), chronic depression, and sleep wake disturbances.
• Sleep: Daylight exposure affects sleep timing, duration, and quality. Shorter days are associated with longer biological nights and melatonin secretion. Evening screen exposure, especially from high-blue-light devices, can delay sleep onset and reduce sleep quality.
• Therapeutic Light: Well-designed indoor lighting can help resynchronize circadian rhythms, improve mood and focus, and support overall well-being.

How to Use Norb: Tips for a Smooth Seasonal Transition

Huberman Lab says, “Circadian rhythm isn’t just about sleep patterns – it also impacts how awake and alert you feel in the morning and your energy and hunger levels throughout the day. Light exposure is one of the most powerful tools to shape your circadian rhythm, but the timing of light exposure can determine if it is beneficial or harmful to your circadian system and overall health (Huberman)”.

1. Morning Light Matters: Use NorbSMART or NorbEVERYDAY-SUN soon after waking to reinforce your body’s natural wake signal.
2. Wind Down in the Evening: Switch to NorbSLEEP 2 to 3 hours before bedtime to cue your body for restorative sleep.
3. Keep a Consistent Schedule: Going to bed and waking up at similar times stabilizes your internal clock.
4. Combine with Healthy Habits: Limit screen time at night, maintain the right temperature bedroom, sleep in a dark environment and incorporate morning physical activity.

Fall does not have to mean lower energy and disrupted sleep. With Norb Wellness Lighting, you can reset your circadian rhythm, boost mood and energy, and embrace the season with balance and vitality.

Explore our full range of wellness lighting at NorbLighting.com and make this fall your most balanced season yet.

Citations

Blume, Christine, et al. “Effects of Light on Human Circadian Rhythms, Sleep and Mood.” Somnologie, vol. 23, no. 3, 2019, pp. 147–156. PubMed Central, https://pmc.ncbi.nlm.nih.gov/articles/PMC6751071/

Circadian Rhythm: What It Is, How It Works & What Affects It.” Cleveland Clinic, 15 Mar. 2024, https://my.clevelandclinic.org/health/articles/circadian-rhythm

Huberman, Andrew. “Light Exposure and Circadian Rhythm.” Huberman Lab, https://www.hubermanlab.com/topics/light-exposure-and-circadian-rhythm

Donohue, Brian. “Scientists Mix Sky’s Splendid Hues to Reset Circadian Clocks.” University of Washington Newsroom, 16 Sept. 2024