This message comes from deadly fortune, the investigative story that dives deep into a world of power, money, and greed, and one man's secret quest to grab the million dollar fortune of his deceased wife. Listen now on the binge wherever you get your podcasts. This is fresh air. I'm Tanya Mosley. If you need an alarm clock to wake up each morning, which most of us do,

you are likely suffering from social jet lag. That's a mismatch between your biological clock

and your daily schedule. And according to a new book by science journalist Lynn Peoples,

drinking coffee or sleeping in on the weekends won't help you get back on track.

In her new book, The Inner Clock, Living in Sink with Our Circadian Rhythms,

People's gets into the latest science around our circadian rhythms,

and their importance in our overall health, even beyond the hours of sleep we get each night.

People's conducted her own experiment,

first by living for 10 days in an underground bunker,

50 feet below ground with no sunlight, watches, or clocks, to better understand the rhythms that guide her from day to day. In her book, People's Digs into the latest research about how our

internal clocks impact every facet of our lives, how well we do in school,

our performance at work, how we interact with people, and even how long we live.

There are even studies that link circadian disruption to cancer, depression, dementia, and Alzheimer's.

Lynn Peoples is an MIT-Nite Science Journalism Fellow. She's also a biostatistician and has conducted HIV

clinical trials and environmental health studies. Her writing has appeared in The Guardian,

Scientific American, and Nature. Lynn Peoples, welcome to fresh air. Thanks so much for having me on.

Let's just start with this experiment that you did. So this self-imposed

hideout that you went on, it didn't just shield you from the sunlight. You were without any emitted light, right?

That even means your cell phones and your computer. None of those things were available to you to see light and also

to see the time. Well, to some extent, I did have LED lights in this bunker. So kind of an untraditional,

a non-traditional bunker. This was a souped up former Cold War era bunker that somebody had

purchased and set up as an Airbnb. And so he had

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