Welcome to the Commune podcast. My name is Jeff Krasnow. So check this out. One in four adults,

that's 25% of all adults, are not getting seven hours a night of sleep. And the knock on

impacts of this are super serious. Just one bad night's sleep can make you as insulin resistant

as a pre-diabetic, tank your immune system, and crank up your brain's

fear center by 60%. And yet we treat sleep like it's optional. We glorify hustle and productivity,

caffeinate the fog, and scroll ourselves into the depths of insomnia night after night. So what's

really going on here? Why are we sleeping less than ever?

And what is it actually doing to our bodies, our moods, and even our humanity?

So my brand new sleep course is live on Commune.

And over the next four weeks, I'll be walking you through some of the key lessons from

this course, exploring the science habits and simple rituals that can help you rediscover what real rest actually feels like.

So welcome to our new series, Sleep Essentials.

We are in a sleep crisis.

One in four adults sleep less than seven hours. Just one night of poor

sleep makes you as insulin resistant as a pre-diabetic with glucose uptake dropping 30 to 40%. A single

night of four to five hours of sleep can reduce natural killer cell activity by up to 70%, weakening your immune

defense. And this shows up immediately, making you more susceptible to viruses the very next day.

That's right. Poor sleep quality could lead to you getting sick. The amygdala, that little cluster

almond shaped in your brain, the fear center,

becomes 60% more reactive, while the prefrontal cortex, this locus of reasoning and

rationality goes offline. You literally become more irritable, anxious, and impulsive through

poor sleep. But get this one. Drowsy driving causes

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