The Health Upgrade Podcast

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 meaningful impact on long-term health and well-being.

Dr. Navaz Habib
Email: podcast@healthupgraded.com
Facebook: https://www.facebook.com/DrNavazHabib/
Instagram: https://www.instagram.com/drnavazhabib/
LinkedIn: https://ca.linkedin.com/in/drnavazhabib

Creators and Guests

Host
Navaz Habib
Author, Speaker, Founder of Health Upgraded. Helping high performers address inflammation and health challenges by activating their Vagus Nerve.

What is The Health Upgrade Podcast?

This podcast is for high-performing entrepreneurs, healthcare professionals, and those who want to upgrade every aspect of their lives by experiencing UPGRADED energy, UPGRADED focus, and UPGRADED ability to show up, every day of their lives. Dr. Navaz Habib and JP Errico will bring you weekly shows including interviews with world-class experts in functional medicine, longevity, health, high performance, and functional movement. We aim to bring you game-changing tools to upgrade your performance, so you can eliminate what is holding you back, show up in your business, relationships, and family, and bring your gifts to the world.

Find out more at: www.healthupgradepodcast.com