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Recovery

Every article we have tagged #Recovery. Dive in to learn how the Zolt app supports this focus.

Pre-Sleep Heart Rate: Why Your Bedtime Heart Rate Matters

Learn why your resting heart rate before bed is the strongest predictor of sleep quality, and how meal timing affects your overnight recovery.

What is Heart Rate Dip During Sleep?

Learn how heart rate dip during sleep reflects your cardiovascular health, sleep quality, and recovery status.

Sleep Consistency and Why It Matters

Research shows sleep consistency may matter more than total hours. Learn why regular sleep-wake times improve your health.

Sleep Stages: Deep, REM, Core, Awake Explained

Understand the four sleep stages tracked by Apple Watch—deep sleep, REM, core, and awake—and what they mean for your health.

Sleep Efficiency Explained

Learn what sleep efficiency means, what percentage is healthy, and how to improve yours for better rest.

Zolt's Sleep Score Explained

Learn how Zolt calculates your sleep score using time asleep, sleep efficiency, deep sleep, REM sleep, and awake time.

What is Restorative Sleep? How Zolt Tracks It

Learn what restorative sleep is, why deep sleep and REM matter, and how Zolt comprehensively tracks your sleep quality.

The Zolt Recovery Score

Learn how Zolt calculates your recovery score using sleep quality, HRV, resting heart rate, and respiratory rate.

The Zolt Activity Score

Learn how Zolt calculates your activity score and what each score range means for your daily movement and training.

Zolt Scoring Philosophy

Understand how Zolt scores work across Sleep, Activity, and Recovery metrics with a consistent 0-100 scale.

Cardio Load and the TSB Model in Zolt

Learn how Zolt uses the Training Stress Balance (TSB) model to track your cardio load, fitness, fatigue, and form.