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Better Sleep

Pain Relief

Decreased Stress

Improved Immunity

Learn more about our 4 Board-Certified MD founders

Learn how MDbio products restore your endocannabinoid balance and maximize health

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Key takeaways


Morning sunlightsupports your natural sleep-wake cycle.


Consistent sleep and wake times strengthen your rhythm.


Align your schedule with your natural tendencies for better sleep.

Your body has an internal circadian rhythm that regulates your sleep-wake cycle. This 24-hour rhythm helps you stay awake during the day and sleep at night. However, disruptions—such as lack of sunlight, inconsistent schedules, and stress—can throw off this rhythm, leading to sleep difficulties. Natural sunlight plays a key role in resetting this internal clock, and maintaining a regular sleep-wake schedule can improve your circadian rhythm.

Illustration of human nervous system with text about resetting internal clock.

Key takeaways


Morning sunlightsupports your natural sleep-wake cycle.


Consistent sleep and wake times strengthen your rhythm.


Align your schedule with your natural tendencies for better sleep.

Your body has an internal circadian rhythm that regulates your sleep-wake cycle. This 24-hour rhythm helps you stay awake during the day and sleep at night. However, disruptions—such as lack of sunlight, inconsistent schedules, and stress—can throw off this rhythm, leading to sleep difficulties. Natural sunlight plays a key role in resetting this internal clock, and maintaining a regular sleep-wake schedule can improve your circadian rhythm.

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The Role of Sunlight and Aging

Sunlight exposure, particularly early in the day, helps regulate your circadian rhythm, reducing reliance on melatonin supplements. As we age, our circadian rhythm naturally weakens, causing earlier sleep times. This shift can make it harder to stay awake in the evening.

Improving Your Circadian Rhythm

To strengthen your circadian rhythm, maintain a consistent sleep-wake schedule. Choose a bedtime and wake-up time that works for you and stick to it. By aligning your routine with your natural rhythm, you can improve your sleep quality.

Infographic with tips for maintaining a healthy sleep/wake cycle around a clock.

Sleep Foundation. (n.d.). Circadian Rhythm [Graphic]. Sleep Foundation. Retrieved December 20, 2024, from https://www.sleepfoundation.org/circadian-rhythm.

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Action items

Reflect on whether you're a morning person, a night owl, or somewhere in between. Consider adjusting your schedule to better match your natural rhythm and enhance your sleep. For example, if you are a night owl, a slightly later workout time and meal time might be right for you, whereas a morning lark will find benefits to working out upon awakening.

Additional Resources

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America’s leading clinically proven nutraceutical brand for better sleep, less anxiety and less pain


*These statements have not been evaluated by the U.S. Food and Drug Administration. Our product is not intended to cure or treat any disease.

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