Don't go swimming right after eating lest you drown. -- Advice to schoolchildren, circa 1970.
When our gradeschool teachers started teaching us the basics of physiology, they taught us that blood brought oxygen and nutrients to our brains, our digestive systems (simplified to "stomachs"), and our limbs, and that these three systems were constantly battling for better allocation of resources.
According to our teachers, our brains always won out because they had to control the rest of our bodies.
Our legs came second, for survival reasons. The concepts of "adrenaline rush" and "fight or flight" were simplified to our grade level.






