“ Cold water on the face, together with holding your breath, sets off what is called the diving response. Your heart slows down. The blood vessels in your arms and legs squeeze shut” - aka. The Mammalian Reflex. I thought it did the opposite - blood pressure goes down thus your vessels expand.
Is there a short but decent RF/antenna crash course? I’m fascinated by the topic — though the prospect of going through a textbook and revisiting the physics rabbit hole gives me massive anxiety (it always ends up recursing to philosophy).
It's not, it only gets metabolized to dextroamphetamine once it's in the blood stream. This is why it has less of an edge compared to just taking dextroamphetamine.
