Why Match Tasks to Your Energy Level?
The same 8 hours can feel very different depending on when you do what. Human focus follows ultradian rhythms — roughly 90-minute cycles of high and low concentration. Matching your hardest tasks to your peak energy windows dramatically boosts daily output.
This calculator takes your self-rated energy levels for morning, afternoon, and evening and suggests how many hours to dedicate to deep work, routine tasks, and recovery activities in each window.
Frequently Asked Questions
Set levels based on your typical pattern. You can re-run the calculator anytime your schedule or sleep habits change.
Morning exercise boosts metabolism; midday exercise fights the post-lunch slump; evening exercise is fine if finished at least 2 hours before bedtime.
Yes — enter only the hours you have available and the calculator will distribute them proportionally across your energy windows.