A new accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study has shown that physical activity and exercise are 'contagious' accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of social media. Researchers at the Massachusetts Institute of Technology (MIT) discovered that people who post accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of their exercise patterns and achievements on social media sites motivate and encourage accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study people to be more active. Researchers tracked the exercise accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of 1.1 million runners over a accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of five years. They looked at the geographic accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of the runners, their social network use, distance, time, pace and the accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study they burned. The researchers concluded that sharing personal exercise accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study via social media can inspire others to exercise more, exercise harder and do so more accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study . The accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study 'Nature Communications' has published the research. The study includes detailed accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of how inspiring it can be to read about a friend's physical activity. Researchers said: "On accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study , an additional kilometre run by friends can inspire someone to run an accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study three-tenths of a kilometre, and an additional ten minutes run by friends can inspire accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study to run three minutes accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study ." The study said social media improved the accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study of runners who had been a little slower or less in accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study , and of those who were showing signs of overtaking a friend's performance. Researcher Sinan Aral said: "In accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study , if you run more, it is likely that you can cause your friends to run accounts additional average because calories competitively data details general journal location longer more other performance period routines shape someone study ."