Quote from pips:
Amygdala stimulating is interesting. It is said to be like a switch that can activate the frontal lobes to a higher degree. Meaning more logical thinking, creativity and happiness.
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You can directly exercise the amygdala with the "Ohm" chant. In stressful psychological situations ( eg. trades gone bad), use any slow breathing technique to bring your brain from the beta to the alpha state where you can process information more rationally.