But healthy is the key: The finding only applied to men with a healthy weight and low risk of heart disease. Overweight weekend warriors had a greater risk of keeling over from a heart attack. “We still believe that at least 30 minutes of moderate-intensity exercise most days of the week is best, but for healthy men, some exercise is better than nothing,” says study author I-Min Lee, MD. (Find out how you can turn him on—to walking.)
