The Mark Groves Podcast #502: How Light Shapes Your Biology: Andy Mant
Mar 9, 2026
Andy Mant, founder of Bon Charge and wellness entrepreneur focused on light, heat, and EMF rhythm tech. He explores how modern lighting and screens hijack circadian biology. Short, practical conversations cover morning sunlight, blue light management, red light therapy, PEMF, flicker‑free lighting, and easy daily light hygiene tips.
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Light On Skin And Eyes Both Alter Biology
- Insight: Light through the eyes and on the skin are both biological signals that affect sleep, aging, and metabolism.
- Andy Mant traced blue light's effects to melatonin suppression and skin aging, which led him to design lenses and circadian lighting.
Fix Your Circadian Rhythm With Morning Sun And Evening Darkness
- Do manage light to protect your circadian rhythm by getting morning sunlight and reducing blue light in the evening.
- Andy Mant explains sunlight signals cortisol and melatonin cycles, and artificial night light keeps cortisol high and disrupts sleep and metabolism.
Sunlight Changes How Your Body Stores Calories
- Insight: Eating and exercising under natural sunlight changes macronutrient partitioning versus artificial light.
- Andy cites a study where identical meals led to more fat storage when consumed under indoor artificial light versus outdoors.