It really doesn't do any more than one at a time does. Perhaps a little more energy. Any difference is mainly manifested in jittery hands. At least that's been my experience.
I wouldn't know as I have never drank an energy drink.
Do they even work?
At one time I could drink coffee all day long and fall asleep at night with no problem.
I tried those a few times (more than a few but I stopped after I saw how it could be dangerous).
I didnt vote since I dont think you will get any of the results you propose in the poll.
I think you will have regular energy for "5 hours" (actually more like 2 hours from my experience).It will not last longer or give you more energy.
But you will taste the bad taste twice.
I wouldnt drink two at once and only drink one if it's for an emergency and I would not do it in a regular basis.
I think one bottle has like 12000% of the Vitamin C you need in one day.
I had one of those once. I had to drive about an hour and I was exhausted.. Not in any shape to be behind the wheel... So I pull in to Speedway, buy one, and knock it back. Made the drive safely, no problems.
FOUR DAYS LATER, the headache was beginning to go away.
Never again. You could not pay me enough money to do that again if you had the fortunes of Warren Buffett, George Soros, Michael Bloomberg, AND Bill Gates.
Most likely just regular energy for a few hours followed by a nice crash.
Also possibly a hole in your stomach
Most energy drinks have a warning on them not to consume more than 3 in a day. I drink them from time to time but they don't really do much for me. Monster green is sooo good though!