ultradian cycles
Type: Concept
As of November 2026, ultradian cycles has been mentioned in one podcast episode on HUBERMAN LAB (Sep 2025).
In chronobiology, an ultradian rhythm is a recurrent period or cycle repeated throughout a 24-hour day. In contrast, circadian rhythms complete one cycle daily, while infradian rhythms such as the menstrual cycle have periods longer than a day. The Oxford English Dictionary's definition of ultradian specifies that it refers to cycles with a period shorter than a day but longer than an hour.
| Mentioned in | 1 episode on 1 podcast (as of November 2026) |
|---|---|
| First heard | Sep 2025 on HUBERMAN LAB |
| Field | Chronobiology |
Who talks about ultradian cycles on podcasts?
ultradian cycles came up; the most recent mention was Sep 2025 on HUBERMAN LAB.
What is ultradian cycles mentioned alongside?
ultradian cycles is most often mentioned alongside Deep Work, Rituals and willpower.
Mentioned together: Deep Work, Rituals, willpower, self-concept, Social media, Habits, Andrew Huberman, identity-based habits, feedback loop, synaptic tagging