A recent research conducted by a team of professors from Oregon University establishes that doing physical exercises while watching DVD is harmful.
Professor Brad Cardinal, who took up this research, explained that the figures doing the physical exercises on the DVDs are shown to be extra glamorous. The persons who do the physical exercise watching these figures are led to imagine and believe the figures that come on the screens.
The research established that these persons who do physical exercise watching DVDs do get mentally affected by the images.
The international DVD market is worth around $ 200 million.