Higher heart rate variability (HRV) is associated with greater psychological and biological resilience because it reflects efficient toggling between stress and rest states — the flexibility that defines resilience.
Where this was said
At 51:28 · chapter starts 48:00
Drew Birnie identifies the anterior medial cingulate cortex as the closest thing science has found to a literal resilience muscle in the brain. [1] — Drew Birnie "Deep inside your brain sits the anterior medial cingulate cortex — the hub that decides whether you push through or quit. Resilient people …" 39:20 It integrates sensory, motor, memory, and decision-making signals to continuously calculate whether the cost of effort is worth the predicted reward — and in more resilient people, it both downplays cost and overvalues reward. The structural difference is real: more resilient people have greater gray matter density and stronger connectivity to the dorsolateral prefrontal cortex (executive function), while less resilient people show stronger connectivity to the motor cortex (the quit signal). This region also predicts SuperAger status — people over 80 with the memory of a 50-year-old have thicker, more connected anterior medial cingulate cortices. The single strongest predictor of its health at age 80? Social connection. Drew confirms aerobic exercise also grows it — both structurally and functionally — making the link between physical training and mental resilience neurologically concrete.
The U.S. Surgeon General's 2023 report on loneliness found that half of American adults report feeling lonely, marking a widespread epidemic of social isolation.
In a peer-reviewed study, Brain.fm's audio technology was shown to increase focus-related brainwave activity by 119%, according to the show's sponsor read.
The Easterlin Paradox shows that wealthier nations — and the wealthiest neighborhoods within them — tend to have the highest rates of anxiety, depression, loneliness, and suicide.
Mental health challenges are nearly universal — BetterHelp's own research found the majority of Americans experiencing symptoms right now.
When applying for Medicaid to cover nursing home costs, there is a 5-year look-back period that can disqualify applicants who gave away or spent down assets.
A broken pipe filled the Bad Friends studio with what the hosts identified as hydrogen sulfide — microscopic fecal aeroparticles — that the crew denied smelling.
Fei-Fei Li's father's liver surgery performed by a da Vinci robot resulted in 10 times less blood loss than a typical open liver surgery, thanks to laparoscopic precision.
Approximately 115 million adults in the US currently have prediabetes, most of whom are unaware, according to the Lingo sponsor segment.
Drug overdose deaths in the US fell from 110,000 to 80,000 in 2024, and then to roughly 70,000 — the largest single-year drop the CDC has ever recorded.
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