Working out benefits all muscles, including your heart
: Medicine & Science in Sports & Exercise
reports that both high-intensity interval training (HIIT
)—short bursts of all-out effort, like battling-rope slams (shown), alternated with periods of lighter work or rest—and weight training improve insulin sensitivity while also reducing the risk of cardiovascular disease. If you’re already lifting, throw some HIIT into your workouts; you might just enjoy it!