Intense workouts boost fitness 3x more than 10,000 steps a day

Working out with more intensity than, say, walking 10,000 steps over the course of a day—drastically improves a person’s fitness, compared to milder forms of exercise, researchers report.

Exercise is healthy. That is common knowledge. But just how rigorous should that exercise be in order to really impact a person’s fitness level? And, if you sit all day at a desk, but still manage to get out and exercise, does that negate your six, seven, or eight hours of sedentary behavior?

These were the sort of questions Matthew Nayor and his team at Boston University School of Medicine set out to answer in the largest study to date aimed at understanding the relationship between regular physical activity and a person’s physical fitness.

The study of approximately 2,000 participants from the Framingham Heart Study appears in the European Heart Journal.

“By establishing the relationship between different forms of habitual physical activity and detailed fitness measures,” Nayor says, “we hope that our study will provide important information that can ultimately be used to improve physical fitness and overall health across the life course.”

Nayor, a Boston University School of Medicine assistant professor of medicine, is also a cardiologist specializing in heart failure at Boston Medical Center, the university’s primary teaching hospital and the city of Boston’s safety net hospital.

Here, Nayor explains the results of the study and what people should know about exercise in relation to fitness:

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