How to breathe while running | Andrew Huberman and Lex Fridman

Summary by Krater

An interview explaining the physiological connection between breathing and heart rate variability during physical exertion, and how double-inhale breathing can help regulate heart rate during endurance efforts.

From the video

Answers: How does breathing affect heart rate variability during exercise?

• heart rate variability
• breathing patterns
• nasal breathing
• double-inhale technique
• cardiorespiratory physiology

What it concludes

• Inhaling moves the diaphragm down and slows blood flow through the larger volume, which the sinoatrial node recognizes to speed up the heart rate.
• Exhaling moves the diaphragm up and makes the heart smaller, causing blood to flow more quickly and signaling the brain to slow the heart down.
• Focusing on making exhales longer or more intense than inhales helps when heart rate feels too high or racing relative to effort.
• Doing double-inhales while running reopens the alveoli in the lungs and helps offload carbon dioxide during physical fatigue.
• Double-inhale and exhale patterns are effective for quickly setting heart rate variability and achieving a steady cadence during exercise, but should be ditched during sprints.