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because that means either your blood pressure is up and you bend over. or its when you bend over all the blood rushes down from your head and your ears then your body has nervous reaction because your hns [human nervous system] which is what Einstein studied.ecause that means either your blood pressure is up and you bend over. or its when you bend over all the blood rushes down from your head and your ears then your body has nervous reaction because your hns [human nervous system] which is what Einstein studied.
Pressure head is the potential energy in form of pressure and Velocity head is the kinetic energy in form of velocity of the fluid. As i said before HEAD is always defined as height of water column. It mean, if i know the value of height, i can estimate the potential energy per unit volume.