Stanford neuroscientist Andrew Huberman is challenging Americans to reconsider their relationship with the sun. In a recent interview with Bill Maher, Huberman stated that morning sunlight exposure deserves a place alongside exercise and proper nutrition as a cornerstone of optimal health.
“We demonize things,” Huberman observes, noting how society has developed an almost adversarial relationship with sunlight. While acknowledging legitimate concerns about UV exposure, he emphasizes that humans are fundamentally “solar creatures” who require sunlight for proper biological functioning.
According to Huberman, the key lies in timing and approach. Rather than avoiding the sun entirely, he advocates for strategic exposure during safer periods. “You want to avoid excessive UV exposure, so that’s typically in the middle of the day when the sun is overhead,” he explains. Instead, the magic happens in those crucial moments after waking.
Huberman’s morning sunlight protocol is surprisingly simple yet scientifically profound. “As soon as possible after waking up, get outside, take off your sunglasses, eyeglasses and contacts are fine, look in the direction of the sun,” he instructs. The process requires no forced staring or uncomfortable exposure—natural blinking reflexes provide adequate eye protection.
This seemingly basic activity triggers a cascade of biological responses that modern science is only beginning to fully understand. The back of our eyes contains specialized neurons that function as part of an extended brain network. “Your eyes are part of your brain, people don’t realize this, but these two things, part of your brain, outside the skull,” Huberman explains.
When these neural circuits receive morning sunlight, they communicate directly with the brain’s central circadian clock, launching what Huberman describes as “a wave front of wakefulness for mood, focus, all the things people want throughout the day.” This natural awakening process stimulates the release of hormones that promote alertness and mental clarity.
Perhaps even more importantly, morning sun exposure sets a biological timer that influences evening sleep patterns. “It sets a timer so that shortly after sundown, your body starts to release something called melatonin,” Huberman notes. This natural melatonin production—distinct from synthetic supplements—creates the drowsiness necessary for restorative sleep.
The neuroscientist positions sunlight viewing as equal in importance to established health practices. “I would put right up there next to exercise, like getting your steps in, you know, cardiovascular exercise, resistance training, and nutrition as one of the foundations of mental health and physical health.”
For those concerned about harmful UV exposure, Huberman offers reassurance about his recommended timing. Morning and evening sun exposure carries minimal risk because “when the sun’s low in the sky, there’s a filter. There’s a filtering that happens in the atmosphere.” This natural atmospheric protection allows people to gain benefits without significant concern about eye or skin damage.
The effects, according to Huberman, become noticeable quickly. “After about two or three days, people notice a significant increase in their energy.” Beyond immediate energy improvements, regular sunlight exposure influences immune system function and contributes to longevity.
For skeptics who worry about weather limitations or early wake times, Huberman emphasizes that sunlight remains available even under challenging conditions. “People always say, there’s no sun where I live. I wake up before the sun comes out,” he acknowledges, before pointing out that atmospheric light exists even on overcast days. “Compare 8 a.m. in the middle of winter on an overcast day to midnight the night before. There’s sun.”
The essential element, he explains, involves capturing photons that penetrate atmospheric conditions regardless of cloud cover or season. This makes the practice accessible to virtually anyone willing to step outside during daylight hours.
“We can actually say that if you’re concerned about longevity, mental health, physical health, that morning sunlight viewing is really the anchor to all of it,” Huberman concludes. Huberman positions this simple daily practice as foundational to comprehensive wellness strategies.
