Working out in groups may be the key to losing weight.
The National Institute of Health found people who work out in groups at a gym, and those who take part in programs such as Weight Watchers, lose more weight than those who try to drop the pounds on their own.
Some experts believe it may be because people are more motivated to keep their goals when they have others around them trying to reach a similar goal.
Researchers say their findings are important not just because of the health benefits, but also because people need more practical, affordable options for losing weight.
