Every article we have tagged #Sleep. Dive in to learn how the Zolt app supports this focus.
Learn why your resting heart rate before bed is the strongest predictor of sleep quality, and how meal timing affects your overnight recovery.
Learn how heart rate dip during sleep reflects your cardiovascular health, sleep quality, and recovery status.
Research shows sleep consistency may matter more than total hours. Learn why regular sleep-wake times improve your health.
Understand the four sleep stages tracked by Apple Watch—deep sleep, REM, core, and awake—and what they mean for your health.
Learn what sleep efficiency means, what percentage is healthy, and how to improve yours for better rest.
Learn how Zolt calculates your sleep score using time asleep, sleep efficiency, deep sleep, REM sleep, and awake time.
Learn what restorative sleep is, why deep sleep and REM matter, and how Zolt comprehensively tracks your sleep quality.
Understand how Zolt scores work across Sleep, Activity, and Recovery metrics with a consistent 0-100 scale.