This season will feature "Knowledge Naps". These are shorter episodes that directly answer your questions about sleep. In this episode, I explain why you get sicker when you've got insomnia or your sleep has been broken for a while. It has to do with production and strengthening of your white blood cells. Without deep sleep, it doesn't happen!

I'll also talk about how you can improve your white blood cell count and sleep via the four domains I highlight in my book, "Sleep 101: How Sleep Is Supposed To Work".

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