Well this is a "bummer"!

Drop that candy bar: a new study  says the "sugar rush" you've used all these years as an excuse to eat something sweet is a myth.

No, that supposed pop of energy that's supposed to wake you up and give you focus, actually does neither -- in fact, there isn't even even a boost of energy at all, says a team of researchers working out of the Humboldt University of Berlin, and the U.K.'s Warwick University and University of Lancaster.

The scientists looked into 31 studies that included nearly 1,300 participants, and found that not only did that hit of sweet stuff make subjects more tired, it didn't enhance their focus, either.

It didn't even boost their moods.

So many lonely nights spent crying with ice cream, wasted.

"The idea that sugar can improve mood has been widely influential in popular culture, so much so that people all over the world consume sugary drinks to become more alert or combat fatigue," says co-author Dr. Konstantinos Mantantzis, from Humboldt University of Berlin, in a media release. "Our findings very clearly indicate that such claims are not substantiated – if anything, sugar will probably make you feel worse."