Why You Can't Fall Asleep Even When You Are Exhausted

Why can't you fall asleep even when you are exhausted? You are drained on the couch at 11:45 pm, then wide awake the second your head hits the pillow. Your brain has not forgotten how to sleep. It is caught between two internal clocks that modern life has pulled apart. Inside: the two-process model of sleep (adenosine pressure vs your circadian pacemaker), why forager communities sleep as the night air cools, first and second sleep, social jetlag, and the three engines keeping you awake tonight: caffeine's chemical mask, the glowing screen, and bedtime procrastination. Plus two fixes you can use tonight. Chapters: 0:00 The 11:45 trap 0:55 Two clocks inside you 2:55 How the night was stolen 4:57 Three engines at full throttle 7:20 The answers and the fix What time does your second wind hit at night? Tell us in the comments. #sleep #insomnia #sleeptips Music: "The Descent" by Kevin MacLeod (incompetech.com), Licensed under Creative Commons Attribution 4.0 (CC BY 4.0): https://creativecommons.org/licenses/... #sleep #insomnia #sleeptips #circadianrhythm #adenosine #socialjetlag #bedtimeprocrastination #sleep science #whycantisleep #exhaustedbutawake