Brief structured respiration practices enhance mood and reduce physiological arousal
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9873947/
Melis Yilmaz Balban, Eric Neri, Manuela M. Kogon, Lara Weed, Bita Nouriani, Booil Jo, Gary Holl, Jamie M. Zeitzer, David Spiegel, Andrew D. Huberman