Huberman Focus Protocol (90-Minute Ultradian Cycles)

What is Huberman Focus Protocol (90-Minute Ultradian Cycles)?

Work in 90-minute focused blocks aligned with your brain's natural ultradian rhythm. Within each block: first 5-10 min of agitation is NORMAL (it's your brain ramping up), peak focus hits around 20-30 min in, then taper off.

Is there evidence for it?

How do you do Huberman Focus Protocol (90-Minute Ultradian Cycles)?

1. 1.Set a 90-minute timer for your most important work. Remove all distractions: phone in another room, notifications off, door closed
2. 2.Expect the first 5-10 minutes to feel hard — your brain needs to ramp up acetylcholine and norepinephrine. Don't bail because it's uncomfortable
3. 3.Peak focus typically arrives 20-30 minutes in. Ride this wave as long as it lasts
4. 4.When the 90 minutes are up, take a genuine 15-20 minute break: go outside, walk, rest your eyes. No screens during the break
5. 5.Do 2-3 of these blocks per day maximum. After 3 blocks of deep focus, your brain is genuinely spent — don't force a 4th

How long does it take?

90 minutes per focus block, 2-3 blocks/day.

Is it hard to start?

medium.

> how Shift handles procrastination

This is one entry from the library Shift matches against. It is general information, not advice about you, and nothing on this page came from anyone's conversation.