Parasympathetic nervous activation increased risk-taking behavior? That's interesting/unexpected (at least to me). Also, this part caught my eye:

> The selective impact of prolonged exhalation breathing on reward responsiveness has important implications for clinical contexts, such as anxiety, panic disorder, and depression, given their distinct autonomic signatures and maladaptive reward processing. By enhancing cardiac parasympathetic modulation through prolonged exhalation techniques, individuals may restore reward processing, a valuable pathway for emotional recalibration. Prolonged exhalation harbors the potential for a low-cost, low-risk, easily applicable intervention to be incorporated into therapy or rehabilitation programs, especially to support pharmacological treatments.

I agree it's counterintuitive, but it makes sense when I think about how, for example, it's the least neurotic people who do high-risk activities like base jumping or mountain climbing. Fear drives you away from threatening things, lack of fear allows you to move toward them more comfortably.

Makes sense to me. The only way I can dip in a snow melt lake is if I slow down my breathing, slow my thinking and dip.

Yeah, I was expecting some sort of "slow breathing produces calmness/more considered behavior" conclusion. But, the exact opposite? Everyone knows what party monsters those zen meditators are? ¯\_(ツ)_/¯