https://www.youtube.com/watch?v=RkHK1H8EwDM
Nikita talks about keeping your energy levels up throughout the day by following the body cues for rest and work. Ultradian cycles are not to be ignored.Pre

https://charlottegrysolle.medium.com/how-to-use-ultradian-cycles-to-best-capture-neuroplasticity-d34dd8897f28
Okay: Ultradian cycles are "about" 90-120 minutes. You could wake up (naturally or by a noise) in the middle of an ultradian cycle. That cycle continues even if you wake up in the middle of it. So ideally, you don't wake up and immediately throw yourself into focused work. But here's the good news:

https://gm3.medium.com/using-your-natural-cycles-of-ultradian-rhythm-to-boost-performance-2ba20f3afd6
CEO of The Energy Project and author of "The Way We're Working Isn't Working," Tony Schwartz, is a vocal advocate for the utilization of ultradian rhythms to enhance productivity.He promotes the idea of managing energy, not time, and encourages people to work in 90-minute intervals for optimal performance based on the body's natural ultradian rhythms.

https://medium.com/@roy.crodeger/unleashing-the-power-of-ultradian-rhythms-aligning-with-your-bodys-natural-flow-a142d32bcbed
Ultradian Rhythms are recurring periods or cycles that occur within a 24-hour day. They include cycles such as the 90-minute REM cycle during sleep and the 3-4 hour cycles of hunger.

https://medium.com/swlh/science-says-we-work-best-in-90-min-cycles-why-work-9-to-5-457839a385af
30 years later, sleep researcher Nathaniel Kleitman discovered that the human body tends to move through 90-120 minute cycles that repeat 3 to 5 times through the night, and this time there was

https://medium.com/frontier-research/ultradian-cycles-and-ultradian-rhythm-57d9c104d91d
Within that 24-hour circadian day, we cycle through periods of 90-minute blocks of productivity and heightened focus. Those blocks of premiere productivity time are known as "ultradian cycles

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6466064/
Ultradian rhythms (URs) have been defined by Daan and Aschoff as "short-term rhythms with a frequency of 10 −3 to 5 × 10 −5 Hz, that is, with periods in the range of 20 min to 6 h" ( [ 3] p 491). Rhythmic activity with shorter periods, such as the patterns of electrical activity of the brain and the heart, will not be discussed.

https://www.linkedin.com/pulse/when-should-you-work-understanding-ultradian-rhythms-josh-millar
The ultradian rhythm is the 90-to-120-minute cycles that the body moves through throughout the day and night. Every 90 to 120 minutes, we experience a period of significant energy, followed by a

https://www.linkedin.com/pulse/20140612155804-42566308-hack-your-productivity-using-the-ultradian-rhythm
The Ultradian rhythm has a 90-110 minutes of an up cycle when the energy is surging followed by a 20-30 minute phase when this energy dissipates. By learning to harness this energy, we can become

https://www.science.org/doi/10.1126/sciadv.abo5506
The central circadian neural network of Drosophila is composed of 150 clock neurons that distribute across the brain, including seven subtypes according to their anatomical positions and size (3, 9, 10).We conducted systematic patch-clamp recordings of all known clock neuron subtypes at the circadian time (CT) 0 to 8 in DD3 in the absence of external sensory inputs.

https://link.springer.com/article/10.1007/s12038-023-00353-3
A recent and updated translation of a book, earlier published in Russian in 2021, contains a fascinating account of the development of a central theme in our understanding of the kinetics of cellular growth and development (Brodsky 2022).The book deals with the twin concepts of ultradian (i.e. about one hour period) signals and cell-to-cell communication.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8407301/
Abstract. Biological oscillations often cycle at different harmonics of the 24-h circadian rhythms, a phenomenon we coined "Musica Universalis" in 2017. Like the circadian rhythm, the 12-h oscillation is also evolutionarily conserved, robust, and has recently gained new traction in the field of chronobiology.

https://medium.com/beingwell/maximizing-productivity-how-to-work-with-your-bodys-natural-rhythm-a4ea9324d0aa
The following tips can help you make the most of your ultradian rhythms: Know Your Peaks and Lows: Pay attention to how your energy levels change naturally throughout the day. Keep track of your

https://tharan.medium.com/intermittent-brief-switch-off-a-secret-to-quick-mental-performance-boost-7654ff4132f1
Ultradian Cycle. There is an energy cycle for every human that goes up burning all the energy and comes down to heal and go again. It doesn't strictly have to be a 90-20 minute wave. ... Just like Intermittent journaling, but writing things exactly irrelevant to the task. This will keep your mind away from stressful things for a bit to

https://link.springer.com/chapter/10.1007/978-3-662-06085-8_17
A biological rhythm is called ultradian if its period is shorter than 24 hour. Ultradian rhythms have been observed in physiological functions, like cellular processes, respiraton, circulation, hormonal release and sleep stages, as well as in behavioral functions, often related to feeding patterns. Ultradian rhythms are characterized by

https://link.springer.com/content/pdf/10.1007/978-3-662-06085-8_17.pdf
Due to its broad definition, ultradian rhythms comprise at least four categories that should be distinguished. In its purest form, ultradian rhythms are continuous, ongoing during all phases of the 24 hours episode. Most animals show, however, polyphasic (and thus ultradian) activity patterns that

https://www.linkedin.com/pulse/ultradian-rhythms-why-you-need-unplug-every-90-minutes-dawn-lorentz
To operate at our best, we need to renew our energy at 90-minute intervals — not just physically, but also mentally and emotionally. When we need a rest, our bodies sends us clear signals such

https://www.nature.com/articles/s41598-020-79661-9
We have discovered a new 4 h ultradian rhythm that occurs during the interphase of the cell cycle in a wide range of individual mammalian cells, including both primary and transformed cells.

https://medium.com/@jhanel95/start-working-with-not-against-your-bodys-natural-energy-ultradian-rhythm-a8bef7ff42f
Aug 18, 2021 · 5 min read. Save

https://journals.biologists.com/dev/article/141/19/3627/46443/Ultradian-oscillations-and-pulses-coordinating
Biological clocks play key roles in organismal development, homeostasis and function. In recent years, much work has focused on circadian clocks, but emerging studies have highlighted the existence of ultradian oscillators - those with a much shorter periodicity than 24 h. Accumulating evidence, together with recently developed optogenetic approaches, suggests that such ultradian oscillators

https://www.nature.com/articles/nrm1980-c1
The phenomenon they describe (τ (period) = 3-4 h) is the cell-division cycle (mitotic) oscillation, not the shorter-period ultradian clock cycle. Although the cell-division cycle is sometimes

https://medium.com/@mchau4108/energy-on-demand-attuning-your-body-with-ultradian-rhythms-263f186654fa
Continuing my productivity series, I've explored Pareto's Principles and Akrasia, shedding light on how to maximize output and combat procrastination. Now, I'm thrilled to introduce another

https://www.hubermanlab.com/episode/time-perception-and-entrainment-by-dopamine-serotonin-and-hormones
In other words, let's say you wake up at 8:00 a.m., and you just finished a 90-minute sleep cycle. Does that mean that your next 90-minute cycle where you could do work begins right at 8:01? No. The interesting thing about these basic rest-activity cycles, these ultradian rhythms, is that you can initiate them whenever you want.