Energy Level Tracker

Log your energy level each hour to discover your peak productivity times. Track over multiple days to identify your natural energy pattern. All data stays private in your browser.

Log Today's Energy (1-5 per hour)

Your Energy Pattern

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Why Track Your Energy Levels?

Everyone has natural energy fluctuations throughout the day, yet most people schedule their hardest work randomly. By tracking your energy levels, you can identify your peak hours — when you are sharpest and most focused — and align your most important tasks with those windows. This simple practice can dramatically increase productivity without adding more hours to your day.

Understanding Chronotypes

Your chronotype is your natural tendency toward being a morning person or an evening person. Dr. Michael Breus identifies four chronotypes: Lions (early risers who peak in the morning), Bears (who follow the solar cycle), Wolves (who come alive in the evening), and Dolphins (light sleepers with irregular patterns). Knowing your chronotype helps you design a schedule that works with your biology instead of against it.

Ultradian Rhythms

Beyond the circadian rhythm (your 24-hour cycle), your body follows 90-120 minute ultradian rhythms throughout the day. These cycles alternate between high and low alertness. The most productive approach is to work in 90-minute focused blocks during high-energy periods and take breaks during natural energy dips. This tracker helps you identify these patterns.

Matching Work to Energy

Schedule your most demanding cognitive tasks — deep work, creative projects, complex problem-solving — during your peak energy hours. Save routine tasks — email, admin, scheduling — for low-energy periods. Physical exercise is best during moderate energy periods. Critical decisions should never be made during energy troughs.

How to Use This Tracker

Log your energy level (1-5) for each hour you are awake. Do this for at least 3 days — ideally a full week — to see reliable patterns. The chart will show your average energy curve, highlighting your peak and trough hours. Use these insights to restructure your daily schedule around your biology.