The Biology of Trauma® With Dr. Aimie

Why Saying No Feels Like Danger: The Nervous System Truth

Dec 12, 2025
In a candid conversation with Jalon Johnson, a boundary-setting advocate, the duo explores the real reasons why saying no can feel threatening to our nerves. They delve into the mental gymnastics of rehearsing imaginary conversations and how past lessons shape our responses. Jalon shares a powerful reframe: 'no with a period is a complete sentence.' As they discuss emotional tolls and the necessity of self-care, they highlight that discomfort in asserting boundaries is a sign of growth and change.
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ANECDOTE

Rehearsing Conversations Alone

  • Aimie used to rehearse boundary conversations for days, playing both sides in her head before saying no.
  • She realized she wasted energy anticipating others' responses and often argued alone about things that never happened.
INSIGHT

No Triggers The Nervous System

  • Jalon points out that if you've never been comfortable saying no, your nervous system treats it like a life threat and activates.
  • That bodily bracing explains why saying no feels like pulling the pin on a grenade even when the external risk is low.
ADVICE

Use 'No' As A Complete Sentence

  • Do practice saying "no" as a complete sentence without explanations or apologies to reduce anticipatory drama.
  • Use short, direct refusals to avoid running exhaustive mental simulations about others' reactions.
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