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Dr. Jack Feldman: Breathing for Mental & Physical Health & Performance
Huberman Lab
The Pupils Oscillate With the Respiratory Cycle
Pupils constrict when we inhale, presumably because there's an increaseand in our rat and sympathetic tone. Your visual window as changing in coordination with bri, your fear response changes with the respiratory cycle. A paper by a zolano showed rather clearly that if you show individuals a fearful faces that there measured response of fearfulness changes between inspiration and expiration. In fact, i don't know the degree to which martial artists exploit that - they will move slower during one cycle compared to the other.
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