Standing at work can help someone shed as much as 7 pounds a year, a study shows.
Researchers found an extra six hours on our feet over the day burnt off 54 extra calories.
The findings have led to calls for standing desks in offices to fight obesity. Adults spend around seven hours a day sitting.
The study of 1,200 adults found the calorie-burning effects of six hours standing added up to 5 pounds, 8 ounces a year.
Men burned off more than women, losing 7 pounds, 2 ounces, against 3 pounds, 12 ounces.
Researcher Francisco Lopez-Jimenez of the Mayo Clinic said: “Standing not only burns more calories, the additional muscle activity is linked to lower rates of heart attacks and strokes.”
Tam Fry of the National Obesity Forum said: “Introducing standing desks in workplaces would make a huge difference.”