Endel's sound personalization algorithm is built around the curve of ultradian and circadian rhythms—universal biological energy cycles. The 'energy' hints you see on the main app screen show the current phase of the ultradian rhythm or rest-activity cycle. It guides your vital performance day and night and ensures that your energy refills every 110 minutes. Ultradian rhythms are a part of our 24-hour sleep-wake cycle—the circadian rhythm hardwired to our bodies. It regulates the secretion of th

EXPLAINED: How your body knows when it's time to wake up and time to go to sleep. No, it's not just your alarm! This Oxford Sparks animation explains how your Circadian Rhythms are more powerful than any alarm ever created. #WorldSleepDay 😴 🎬 | Oxford Sparks | University of Oxford

Six Ways to Reset Your Circadian Rhythm