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Featured image for Why Does My Weight Fluctuate So Much? The Science Behind Daily Weight Changes

Why Does My Weight Fluctuate So Much? The Science Behind Daily Weight Changes

May 6, 2025

It's completely normal to have daily weight fluctuations. That's why tracking your trend weight is more important than tracking your day-to-day weight.

Featured image for Why is my TDEE not updating in Zolt?

Why is my TDEE not updating in Zolt?

May 6, 2025

Zolt's dynamic TDEE algorithm requires 2 weight entries and 3 calorie entries a week to calcualte an accurate TDEE successfully.

Featured image for Understanding TDEE, Maintenance Calories, Expenditure

Understanding TDEE, Maintenance Calories, Expenditure

May 6, 2025

Understanding your TDEE is necessary for effective weight management, whether your goal is weight loss, maintenance, or muscle gain.

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Zolt’s Dynamic TDEE Algorithm

May 6, 2025

Zolt's dynamic TDEE tracker makes weight goals (cuts / bulks) easy to achieve.

Featured image for Cardio Load and the TSB Model in Zolt

Cardio Load and the TSB Model in Zolt

May 6, 2025

Zolt tracks and interprets your Cardio Load for you, using the TSB-CTL-ATL model.

Featured image for Tracking Your AHA Exercise Goals with Zolt

Tracking Your AHA Exercise Goals with Zolt

May 6, 2025

Zolt makes it easy to track your progress towards the American Heart Association's fitness standards each week and month.

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The Zolt Activity Score

May 4, 2025

Zolt's Activity Score is a personalized daily measurement of your physical movement and exercise intensity. It analyzes your steps, workouts, heart rate data, and calorie expenditure to provide a comprehensive view of your daily physical activity levels.

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The Zolt Recovery Score

May 4, 2025

Zolt's Recovery Score is a personalized daily measurement of how well your body has recovered and is ready for the day ahead. It analyzes physiological signals collected while you sleep to determine your readiness for physical and mental performance.

What is Sleep Debt? Why Sleep Debt Matters

May 4, 2025

Sleep debt is the cumulative effect of not getting enough sleep over time. Zolt helps track your daily sleep debt balance visually.

Featured image for Sleep Consistency and Why It Matters

Sleep Consistency and Why It Matters

May 4, 2025

Going to bed and waking up at consistent times improves health more than total sleep hours, according to research. Discover how to optimize your sleep schedule for better energy and wellbeing.

Sleep Efficiency Explained

May 4, 2025

Sleep efficiency measures how effectively you use your time in bed for actual sleep. Zolt tracks and rates your sleep efficiency.

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Sleep Stages: Deep, REM, Core, Awake

May 4, 2025

Zolt, integrated with your wearable, tracks sleep stages to give you meaningful insights into your sleep quality.

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Zolt’s Sleep Score Explained

May 4, 2025

Zolt's sleep score is a representation of the quality of your sleep last night. Excellent (75+) is very achievable and is the target for each day.

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Zolt Scoring Philosophy

May 4, 2025

Zolt provides three key health metrics—Sleep, Activity, and Recovery—to help you optimize your daily performance and wellbeing. Each score gives you actionable insights into different aspects of your health, using a consistent scoring system that's easy to understand and track over time. Understanding the Scoring System Zolt scores work on a consistent basis. Each score […]

Featured image for BMR vs TDEE: Explained Simply

BMR vs TDEE: Explained Simply

February 1, 2025

BMR is a subset of TDEE. TDEE is BMR + other energy contributors like activity, movement, and metabolic adjustments.