The Modern Manager

401: How to Use Nature to Rewire Your Brain for Greater Focus, Creativity, and Energy with Dr. John La Puma

Mar 31, 2026
Dr. John La Puma, physician and two-time NYT bestselling author who pioneers culinary and lifestyle medicine, explores how indoor life derails brain function. He discusses why morning light, green and blue spaces, and sensory outdoor practices boost focus, creativity, and energy. Practical city and workplace strategies show how small nature doses can reset attention and resilience.
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INSIGHT

Indoor Confinement Causes Biological Cognitive Tax

  • Being indoors 93% of the time creates “digital obesity” that dulls focus and causes physiological harms like immune issues and insulin resistance.
  • John La Puma links indoor air (CO2 ~1000 ppm) to a ~15% drop in cognitive function and advocates opening windows or measuring CO2 in meeting rooms.
ADVICE

Take Morning Light Within The First Hour

  • Get 10–15 minutes of morning sunlight within 60 minutes of waking to set your circadian master clock and boost daytime alertness.
  • This morning light produces a cortisol boost, improves insulin sensitivity, and increases deep sleep and brain glymphatic cleaning at night.
ADVICE

Use A 10,000 Lux Lamp On Dark Mornings

  • Use a 10,000 lux light therapy lamp when natural morning light isn't available to anchor your circadian rhythm.
  • Place the lamp 6–18 inches from your face while eating or reading, then still get outdoor light later for wavelength benefits.
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