These drinks contain stimulants such as caffiene, or herbal stuff.
When taking in a stimulant, it acts on your sympathetic nervous system. Your Sympathetic nervous system is your 'flight of fight' system. When it is stimulated, a number of changes occur in the body such as:
Increased heart rate
Vasoconstriction (which can lead to high blood pressure)
(The list goes on an on.......)
If you think about it, cocaine is also a stimulant, and then of course it too would act on the sympathetic nervous system causing the same reactions.
The opposite of the sympathetic nervous system would be the parasympathetic, and reactions are opposite.
I know that may be more than you wanted to know, but you asked "how".
You found this answer helpful
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer.
For a more detailed, immediate answer, try our premium service [Sample answer]
My healthy, 26 year old, son drove through the night, from northern VA to central ME,14 hrs., during which time he consumed 3 Red Bull energy drinks. He is now suffering from severe constipation. Could Red Bull be the cause? Thank you. YYYY@YYYY
What health risks are there if you smoke weed and then drink a red bull? I m a 16 year old girl and weigh about 150... I know smoking pot isn t good for me, but I m still going to do it anyways... I was just wondering if I drink a red bull after I smoke I won t have a heart attack or pass out or anything like that right?