#2210 - Calley Means & Casey Means, MD

2435.211 - 2453.003 Casey Means, MD

And the way your body knows whether it's day or night is if you get photons hitting your retina and your skin cells. Pretty basic, pretty foundational for human health. Didn't learn anything about it. Didn't learn anything about sunlight. Didn't learn anything about photons. Didn't learn anything about sleep. You know, we're sleeping 20% less on average than we were 100 years ago.