The First 30 Minutes of My Day Changed Everything

No app. No supplement. Just stepping outside and looking at the sky. This simple practice fixed my energy slump—and the science explains why.

Dr. Andrew Huberman Fan
Dr. Andrew Huberman Fan
Jun 06, 2025
5 min
The First 30 Minutes of My Day Changed Everything
Photo by Unsplash / VitalLife

The One Thing That Actually Works

I've tried a lot of morning routines. Cold showers. Gratitude journaling. Elaborate breakfast protocols. Some helped a bit. Most fell away.

Then I learned about morning sunlight exposure. It seemed almost too simple to matter. Just... go outside? Look at the sky? That's it?

But the science is surprisingly robust. And when I tried it consistently, something changed.

The Biology Behind It

Your eyes contain specialized neurons called intrinsically photosensitive retinal ganglion cells (ipRGCs). These cells are sensitive to the specific blue-yellow contrast found in morning sunlight—not artificial light, not light through windows. Actual outdoor light.

When morning sun hits these cells, it triggers:

  • A healthy cortisol pulse that makes you alert
  • A timer that tells your brain to release melatonin 12-14 hours later
  • Regulation of your entire circadian system

In other words: your morning light exposure determines your evening sleepiness. The domino falls early.

The Protocol

It's refreshingly simple:

  • Sunny day: 5-10 minutes outside within 30-60 minutes of waking
  • Cloudy day: 10-20 minutes (overcast skies still have plenty of lux)
  • Very overcast: 20-30 minutes

Don't wear sunglasses during this time—you need the light hitting your eyes. Looking through a window doesn't work either; glass blocks the relevant wavelengths.

You don't need to stare at the sun (please don't). Just being outside facing the general direction of the sky is enough.

What Changed For Me

After about a week of consistent morning light viewing:

  • I stopped hitting snooze
  • The afternoon energy crash softened
  • I started feeling actually tired at 10pm instead of midnight

Free. Requires no willpower. Based on solid biology. Sometimes the best interventions are the simplest ones.

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Dr. Andrew Huberman Fan

About Dr. Andrew Huberman Fan

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