Exergames are active video games that have an exercise component to them. Active video games may increase adults' energy expenditure as much as moderately intense exercise. Activities such as boxing, tennis and baseball exergames rank the highest in energy expenditure, while activities such as yoga and balance exercises are effective in improving flexibility and fall prevention. You can gain the most health benefits when you can do the equivalent of at least 2½ hours of moderate-intensity physical activity each week.

Source: Science Daily