Kwik Brain with Jim Kwik How Trauma Shrinks Your Brain (And How Exercise Reverses It)
Dec 8, 2025
Trauma directly alters brain structure, triggering survival instincts and increasing stress hormones. However, exercise is revealed as a powerful tool for healing, promoting neuroplasticity and brain cell growth. Discover how BDNF acts like fertilizer for the brain, why aerobic activity can expand memory centers, and the benefits of combining movement with mindfulness. A practical seven-day challenge offers simple steps to incorporate movement into your daily life, paving the way for recovery, improved focus, and a renewed sense of control.
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How Trauma Physically Alters The Brain
- Trauma reshapes the brain by overactivating the amygdala and releasing excess cortisol.
- This process can shrink the hippocampus and disrupt the prefrontal cortex, impairing memory and self-regulation.
Exercise Triggers Neuroplasticity
- The brain remains plastic and capable of rewiring at any age through neuroplasticity.
- Aerobic exercise releases BDNF which acts like fertilizer to grow and connect brain cells.
Start With Tiny, Unfail-able Steps
- Start with tiny, achievable movements like a 5–10 minute walk or a short dance session.
- Use small wins to build momentum from a few minutes into a regular habit.