Andrew Huberman· PhD
when you sense a stressor with your mind or your body senses a stress stressor excuse me from a wound or something of that sort a signal is sent to neurons that are in the middle of your body they called the sympathetic chain ganglia the name doesn't necessarily matter they release norepinephrine very quickly it's almost like a a sprinkler system that Just Hoses your body with epinephrine that will increase heart rate will increase Brea breathing rate it will also increase the size of vessels and arteries that are giving blood flow to your vital organs you also release adrenaline from your adrenals again s riding at top your kidneys and you release it from an area of your brain called Locus cerus and that creates alertness in your brain