ATLANTA (WAOK) - Sitting for more than three hours a day can shorten a person’s life expectancy by two years, even if that person is physically active and stays away from dangerous habits like smoking, new research says.

Watching TV for more than two hours a day can trim another one-point-four years of life expectancy.

The report, out today, analyzed five studies of nearly 167-thousand people over four to 14 years.

The report is in the online journal “BMJ Open.”