Primarily it is caffeine. All of these drinks contain a lot of caffeine.
In your all the cells of your body there is a chemical called ATP that acts like currency for energy usage. As our neurons use ATP it gets broken down, eventually it will get broken down into adenosine. Adenosine is then a result of using a lot of energy in a long day. Adenosine is used as a neurotransmitter to inhibit or quiet neurons of the brain causing you to want to go to sleep. It is telling your brain that it needs to rest and rebuild its reserves of ATP. Caffeine inhibits this process and stops ATP from inhibiting the brain, causing you to stay awake.
no
No nothing in energy drinks and no legal substances effect dopamine levels
Energy drinks never give's you energy in real. Its just a business for the company who ever make's it.
it doesnt
You'll have a dead hamster
yes. yes it does :D
No, energy drinks have no effect on pregnancy tests.
Depends - but usually not at all
Yes, caffeine increases your heart rate.
they make your blood pressur go up
They wouldn't, because I don't drink them.
No. This is not confirmed, however.
No, there is no electricity in energy drinks.