About this episode

This episode explores the impact of light on heart rate variability and nervous system function, offering practical strategies for optimizing light exposure.

In this episode, I explore the connection between your light environment, the vagus nerve, and heart rate variability (HRV). Drawing on a 2025 systematic review of 25 studies, I explain how both the timing and quality of light exposure can influence nervous system function and overall recovery. I discuss how morning exposure to bright, blue-enriched light helps regulate your circadian rhythm and support healthy biological rhythms, even if it may cause a temporary reduction in HRV. In contrast, warmer, dimmer light in the evening can help promote relaxation and prepare the body for restful sleep. I also share practical strategies for optimizing your daily light exposure, particularly for individuals who experience anxiety, stress, or heightened sensitivity to environmental factors. As a simple challenge, I invite you to pay closer attention to your light habits for one week. Aim to get natural light in the morning and use warmer, lower-intensity lighting in the evening. Observe how your HRV responds over time, rather than focusing on moment-to-moment changes. If you find this episode valuable, share it with someone who may benefit from it. Small changes in daily habits can have a…

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