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The Knowledge Project with Shane Parrish cover image

#176: Dr. Leah Lagos and Joe Mazzulla: Control Your Heart, Conquer Your Stress

The Knowledge Project with Shane Parrish

NOTE

Vasovagal Constriction: How Stress Affects Blood Flow and Cognition

MRI scans revealed a phenomenon called vasovagal constriction, where blood vessels constrict during moments of stress to redirect blood flow to the brain. Interestingly, individuals who practiced mindful breathing had wider blood vessels, reducing the cognitive effects of stress. This process takes about seven weeks to see significant changes, including increased focus, creativity, authenticity, and cognitive dexterity. Many people find the cognitive dexterity aspect to be the most surprising and beneficial outcome.

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