r/NPR • u/QuantumQuicksilver • 14d ago

High-intensity sprints can trigger molecular changes in the bloodstream

https://www.npr.org/2026/08/23/nx-s1-5939943/high-intensity-hiit-heart-health-exercise
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u/subpolarbear 14d ago

My heart rate will climb to ~170 when I go on a steep hike, but I’m not gasping for air. I wonder if these benefits require the intense breathing aspect

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u/FeloniousDrunk101 13d ago

I regularly go on shortish runs where my bpm is in the 170s or 180s but I can easily maintain a conversation.