A study out of Norway finds that older men doing three hours of exercise a week lived around five years longer than those who were sedentary.

The research tracked 5700 men aged tracking 68 to 77. It found that those putting in the equivalent of six, 30-minute sessions of any intensity, were 40% less likely to have died during the 11-year study. While those who carried out vigorous exercise saw the highest benefits, even light intensity activity lowered mortality risk – However, anything less than an hour a week of light exercise had no impact.