What a can of Red Bull does to your body

It's the drink that gives you a boost of energy when you're tired, but have you ever wondered about the real impact energy drinks have on your body?

Well now one researcher has conducted his own experiment to uncover the changes that occur in the body for up to 12 days after consumption of a single can - and the results are pretty disturbing.

Erwin Johnson's report was reproduced by The Sun and details how and when the drink's caffeine enters your bloodstream.

Here's what he found:

The impact of a can of Red Bull over time. Image / NZHerald

15-45 minutes:
Caffeine levels will peak, creating a sense of heightened concentration.

30-50 minutes:
The liver will begin to react by absorbing more sugar.

1 hour:
Caffeine levels begin to drop and you may start to feel tired.

5-6 hours
At this point the body will have worked to reduce the caffeine content in your blood by half.

12 hours
For most people, the caffeine from the energy drink will be out of your bloodstream, but this will depend on age and activity levels.

12-24 hours
For regular Red Bull drinkers, this is the point where withdrawl symptoms will kick in. You may begin to feel irritable, constipated, and suffer from headaches.

7-12 days
This is the average amount of time it takes for the body to build tolerance to a daily dose of caffeine. So to continue feeling any impact at this point you would need to up your intake.

Read the more at NZ Herald.