A slow internet connection may have some negative effects on the human body, according to a new study conducted by Ericsson. According to this research, who goes by the name “The Stress of Streaming Delays”, the stress experienced by those trying to load a movie clip on a poor internet connection is comparable to that experienced when looking at a horror movie.

The researchers measured the pulse and the brain activity of 30 volunteers who were put to use a mobile device with slow internet speed.

When they had to run a video clip, their heart beat rate increased by 38%, and the stress levels by up to 34 percent. Moreover, according to Ericsson, just two seconds of buffering can double your stress level.

After waiting more than six seconds, the stress levels decreases, because the brain is accepting the situation.

If you would like to find out more details about the effects of a bad internet connection, you can find the complete study here.