According to federal exercise guidelines, adults up to age 64 should get at least 2.5 hours of moderate physical activity per week. But only about half of those adults, and 42 percent of people ages 65 to 74, meet this recommendation, the researchers said.
The results showed that those who reported walking regularly but not enough to meet the exercise guidelines were less likely to die during the study period than those who didn’t get any physical activity. Specifically, the researchers found that those who didn’t get any exercise were 26 percent more likely to die during the study period than were those who walked for less than two hours per week.
Rachael Rettner, Washington Post, October 21, 2017