This is TED Health, a podcast from TED, and I'm your host, Dr. Shoshana Ungerleiter.

After residency, I spent a lot of time working night shifts in the hospital. It was a strange period of my life,

living under fluorescent lights, sleeping in short, scattered bursts, and then wondering why I

always felt just a little bit off.

Back then, I thought exhaustion was just part of the job.

But what I didn't fully appreciate was how much our bodies rely on light, real natural daylight,

to regulate everything from mood to metabolism to the ability to fall and then stay asleep. In this episode,

sleep scientist Christine Bloom explains how daylight keeps our internal clocks ticking in sick,

and why so many of us are out of rhythm without even realizing it. So if you've struggled with sleep,

burnout, or just feel disconnected from your own energy,

this talk might be your wake-up call.

Because better sleep doesn't always start in the bedroom.

It might start by stepping outside.

And then stick around after the talk for an interview with Dr. Meredith Broderick,

a neurologist and sleep expert who helps patients

address the root causes of their sleep issues through science-backed approaches. We'll explore

why so many of us struggle with sleep, me included, and what we can do to finally get the rest

that we need. But before we dive in, a quick break to hear from our sponsors.

Think of a nappy, see-through, and perfect for keeping things fresh.

Now you're thinking, that's not a nappy, that's cling film.

If you think a nappy is cling film, then you must be a supermarket delivery substitute.

Accardo has 99% order accuracy. So when you think of a nappy and order a nappy, you'll get a nappy.

...