Ultradian Rhythm

Last updated Feb 9, 2024

In chronobiology, an ultradian rhythm is a recurrent period or cycle repeated throughout a 24-hour day. E.g. the first 10 minutes of a 90-minute (Ultradian Rhythm) deep work block are always going to be hard. That’s okay.

In contrast, circadian rhythms complete one cycle daily, while infradian rhythms, such as the human menstrual cycle, have periods longer than a day.

This is also related to Deep Work, and how to get into it.

Origin: 🔃 Reflection Template
References:
Created 2022-09-14