If you can't start your morning without a cup of joe, you aren't alone, but if you find yourself drinking more than six cups of java a day, you could be putting your health in danger.

According to the Diagnostic and Statistical Manual of Mental Disorders, "caffeine intoxication" does exist. Caffeine blocks neurotransmitters such as dopamine and norepinephrine in the brain while triggering stimulating chemicals that give coffee drinkers that jolt.

Some people can get edgy from one cup of coffee while others need a few to feel the symptoms of too much caffeine, which include insomnia, nervousness and increases in energy.

Matthew Johnson, associate psychiatry professor at Johns Hopkins University, said people could die from too much caffeine.

"That would mean about 14,000 milligrams or around 140 8-ounce cups of coffee in one day," he says. "One cup makes you feel good and alert, but five cups may make you feel like your stomach is cramping. You feel wired and you wouldn't typically be able to go overboard."

While one study suggests health benefits at up to six cups per day, other studies have found health risk in people under the age of 55 who drink more than four cups daily.

A new video from YouTube channel YouTube Nation explores all we need to know about coffee. Is it good for us and will it kill us?

To test public knowledge about coffee, Alex from YouTube Nation asked people questions about the beverage. For every wrong answer, Alex had to drink a shot of espresso.

The answers may shock you.

How much money does coffee make a year? About $20 billion, not the guesstimated millions one coffee drinker replied. And so, Alex took his first shot.

What is coffee trade? "Farmers who make the coffee get an equal cut of what's coming from it," Alex responded, taking two shots for two wrong answers.

What about the one answer we all want to know? It would take about 50 shots of espresso to kill you, depending the size of your body. "I'm going to die today," Alex joked.

While coffee in its original form is not a bean but rather a circular red and sometimes green berry, there are two different kinds of coffee beans.

Thankfully, Alex did not die after his seven shots of espresso, but he did note that all that caffeine doesn't make you feel better. It makes you feel different.

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