Two recent researches showed that girls of school going age and women in their 70s are less active than their male counterparts.

Researchers at Liverpool John Moores University studied the behavior of 10 and 11-year-old children in the playground. The study revealed that girls take part in 6% less vigorous playtime activity than boys. Researchers found that boys and girls tend to play differently.

Girls prefer to spend time in smaller groups and engage in verbal games, conversation and socializing whereas boys played in larger groups and engaged themselves in physically active games, such as football.

Lead researcher Dr. Nicky Ridgers said: "Schools should be aware of the differences between the way girls and boys behave in the playground and the fact that girls tend to favour small group activities."

Researchers at University of Bristol found that activity level of the women aged over 70 much lower as compared to their male counterparts. Over 70% of study subjects walked less than 5,000 steps a day.

Researcher Prof. Ken Fox said: 'Men accomplish higher intensity physical activity than women and this seems to be explained by trips out of the house.'