A recent study has revealed that people perform better and give more effort when competing against another person. But better yet: they work the hardest and perform best when working with that other person towards a common goal.
Brandon Irwin, assistant professor of kinesiology at Kansas State University, found that those who exercised with a teammate whom they perceived to be better increased their workout time and intensity by as much as 200 percent.
"People like to exercise with others and make it a social activity," Irwin said. "We found that when you're performing with someone who you perceive as a little better than you, you tend to give more effort than you normally would alone."
Read the whole article here: http://www.k-state.edu/media/newsreleases/nov12/exercise112612.html