The biggest video sites and their users are reporting an increase in users of the sit-ups and standing video sites, which feature people sitting in the same spot for a prolonged period of time, according to a new study from Harvard University.

In a new research paper published in the journal PLOS ONE, researchers found that as people became more aware of the health risks of sitting and standing videos, they began to share their own videos with friends, family, and the media.

While the study was conducted in the United States, the researchers say the trend could be a trend worldwide.

The researchers looked at more than 6,500 videos uploaded by the YouTube community between 2011 and 2014.

They analyzed the content of videos uploaded on the video site to determine whether there was an association between the popularity of a video and the likelihood that a user shared it.

They found that video sharing increased the likelihood of the user sharing the video with a friend.

But the researchers also found that people who shared videos with their friends and family also shared them with the media, a trend that continues to this day.

Researchers also found a connection between video sharing and a rise in people being physically active.

While it is unknown what causes this physical activity, the study says that it could be linked to the spread of the so-called “body odor” video.

People who watched videos of people sitting and sitting in a position that is uncomfortable for them or they are not comfortable with the position could become more likely to take action, the paper says.

The study was published in PLOS One.