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Bryan Johnson@bryan_johnsonX

If you struggle with impulse control, do this 10x a day to make your brain stronger: + notice the impulse to check your phone + deny the

what it claims

To strengthen your impulse control, practice the following exercise 10 times a day: identify the urge to check your phone, decline this request, and wait 10 minutes before giving in.

holds up

This advice is based on the concept of 'urge surfing,' a technique derived from cognitive behavioral therapy and mindfulness.

noli's read

This advice is based on the concept of 'urge surfing,' a technique derived from cognitive behavioral therapy and mindfulness. Research, particularly randomized controlled trials (RCTs) on emotional regulation, confirms that creating a delay between an impulse and an action helps reduce the brain's automatic reactivity. The idea of 'strengthening' the brain is a metaphor for synaptic plasticity: repeating this inhibition engages the prefrontal cortex, which is involved in executive functions. While the short-term effect on managing distractions is well documented, the claim that this provides overall 'self-mastery' or increased depth remains a behavioral extrapolation rather than a measured clinical result. It is interesting to note that willpower is often described as a limited resource (ego depletion theory), although this model is debated by recent meta-analyses. In sum, the approach is mechanically sound for breaking digital reflexes, but its general impact on personality should be nuanced.

the sources

  1. 1Hunt MG, Marx R, Lipson C, Young J. 2018
  2. 2Yang J, Fu X, Liao X, Li Y. 2019

Claimed by Bryan Johnson. Noli grades the claim, never the person.

Decoded by Noli · July 18, 2026 · the original post

What the graded evidence says

Evidence
C

Linked to, not proven to cause.

Effect
loneliness/depression after limiting social media (RCT); association of problematic smartphone use with poor sleep, anxiety, depression — reduced loneliness and depressive symptoms when limiting social media to ~30 min/day for 3 weeks (small RCT); problematic use robustly associated with poorer sleep and mood
Measured on
young adults / students (RCT); broad samples for the association

What’s uncertain

The randomized evidence is limited and small-scale; the strong links to poor sleep and mood are largely associational. Benefits are modest and individual.

Bryan Johnson in the Register28 claims graded · solidity 80/100See their record →

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