Send us a text Sleep is the quiet engine of health and performance, yet most of us treat it like a luxury. We dive into what the body actually does at night—how melatonin sets the stage, why deep sleep restores tissues and immunity, and how REM stitches learning and creativity together—then translate the science into tools you can use tonight. With our physician co-host Dr. Richard Kennedy, we map the markers of poor sleep you’ll notice during the day: mental fog, irritability, focus lapses,...