AMA #1: Leveraging Ultradian Cycles, How to Protect Your Brain, Seed Oils Examined and More
Discover how to harness ultradian cycles to maximize your focus and productivity throughout the day. Learn essential brain protection strategies against neurodegenerative diseases like Alzheimer's and Parkinson's. Dive into the effects of seed oils on metabolic health and get tailored advice for adapting routines in low-sun environments. Explore whether age alters health recommendations and what wisdom you’d give your younger self. A treasure trove of insights awaits that blends neuroscience with practical life hacks!
Top snips
What are Ultradian Rhythms?
1:49 – 2:46
Ultradian rhythms = biological cycles shorter than 24 hours, typically ~90 minutes. Andrew explains these govern wakeful focus and sleep architecture — they run from birth to death and regulate when your brain is primed for learning and performance.
Key: they repeat throughout the day and shape attention windows.
These 90-minute cycles occur periodically throughout the day.
— Andrew Huberman
How Huberman Uses Them Daily
2:13 – 3:51
Andrew aims for 1–2 focused ultradian blocks/day (90-minute windows). He says up to 3 is possible, 4 is rare. These blocks sharpen the circuits for focus — practice makes focus easier because those circuits undergo neuroplasticity.
- Target: 1–2 blocks
- Exceptional: 3
- Rare: 4
When to Start Your First Block
7:00 – 8:13
You don't start from wake time — start when you feel most alert after waking (watch for 1–2 days). Often the first ideal block lands around 9:30–10:00 AM if you wake ~7:00 AM. Use sunlight, hydration, or brief exercise to shape this timing.
Empirical: observe your morning alertness.
Practical 90-Minute Protocol
12:14 – 13:47
Set a 90-minute timer, but expect ~10–15 min warm-up and about ~60 min of deep focus inside that block. Remove distractions (phone, Wi‑Fi if possible). Neuroplasticity molecules like BDNF peak within that effective hour.
Tip: treat the 90-min block as a whole, but capture the central hour.
How to Capture a 3rd Block (If Needed)
15:35 – 16:47
Shift your cortisol pulse earlier by waking earlier + light and brief high-intensity exercise (10–15 min). That can move your ultradian peaks earlier and create a third usable learning window before midday, but remember sleep duration must still be preserved.
Balance timing with sleep quality.
Why Rest Matters for Learning
17:33 – 17:58
Focused work triggers plasticity, but actual rewiring happens during deep sleep and non-sleep deep rest. Use ultradian blocks to trigger learning; consolidate it with good sleep and restorative breaks.
They are offered to you at least twice every day, and you can really learn to detect when they occur and when they're likely to occur.
— Andrew Huberman