He’s 20 and Knows More About Light Than Most Scientists | Jonathan Jarecki

He’s 20 and Knows More About Light Than Most Scientists | Jonathan Jarecki

June 19, 2026 · 1h 20m

About this episode

Sarah Kleiner interviews 20-year-old Jonathan Jarecki about the impact of light exposure on health and performance.

Host Sarah Kleiner introduces a conversation with 20-year-old college student Jonathan Jurecki about why aligning light exposure with the sun can dramatically improve energy, mood, sleep, and daily performance. Jonathan shares his holistic upbringing and how he became immersed in sunlight and circadian research, then explains key concepts such as sunrise light contrast, intrinsically photosensitive retinal ganglion cells, the suprachiasmatic nucleus, cortisol and melatonin rhythms, and the role of red/near-infrared light in mitochondrial function and oxidative stress (including subcellular melatonin). They discuss why artificial light at night and late-night screens disrupt circadian alignment, practical strategies like controlling evening lighting, blue blockers and hats, and why sleep timing and consistency matter. Jonathan also describes influencing peers to view sunrise, his plans for science communication and research, and efforts to bridge allopathic and naturopathic medicine — Sauna Space Glow Light - code SarahK - https://sauna.space/products/glow-infrared-therapy-light?sca_ref=9407238.JOVWINJQk7i97H Lumios Bulbs from RA optics - code SARAH…

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