I don't see it mentioned here yet, but the Huberman Lab podcast "Dr. Jack Feldman: Breathing For Mental & Physical Health & Performance" covers the function of

I don't see it mentioned here yet, but the Huberman Lab podcast "Dr. Jack Feldman: Breathing For Mental & Physical Health & Performance" covers the function of sighs and other interesting topics. "They discuss physiological sighs, peptides expressed by specific neurons controlling breathing, and magnesium compounds that can improve cognitive ability and how they work." https://hubermanlab.com/dr-jack-feldman-breathing-for-mental-physical-health-and-performance/ https://hubermanlab.com/dr-jack-feldman-breathing-for-mental...