Science Explained: What Happens to YOUR SLEEP When You Fast?

#skipdinner #whathappenswhenyoufast #fastingexperiment #scienceexplained #brainclarity Why do so many people experience sleep problems while fasting, even without feeling exhausted? In this video, Science Explaine breaks down the biological truth behind restless nights during fasting. Using neuroscience and evolutionary biology, Science Explaine explains how orexin, cortisol, and ketones keep the brain alert when food is absent. Rather than a sleep disorder, Science Explaine reveals that this may be a natural survival response and an energy optimization phase. If you’ve ever worried that fasting is “damaging your sleep,” Science Explaine helps you understand when these reactions are normal and when adjustments are needed. This is a science-based perspective that Science Explaine believes everyone should understand before judging their body’s signals. 00:00: - INTRO. 01:33: - The role of orexin, the "awakening" substance in the brain. 04:31: - After 24–48 hours of fasting: Ketones & BDNF support brain function. 06:41: - Why do some people experience insomnia when fasting? 08:51: - Sleep during fasting: Reduced hours – Increased quality. 10:50: - Important.