blood pressure is regulated by autonomic system
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送交者: cornbug 于 2016-04-10, 11:40:34:
回答: 说是心脏体位要比头高。血液容易什么的。 由 短江学者 于 2016-04-10, 10:42:38:
When you are getting up from bed, there is a drop of blood supply to your brain and your heart will increase pumping (baroreflex) so that you will not be fainted (syncope.) to be in dreaming of a girl, too bad.
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