When you’re putting together a running playlist, tack Norah Jones on the end. A study in Medicine & Science in Sports & Exercise found that capping an intense workout with mellow music helps slow the heart rate and lower levels of cortisol, a stress-related hormone.
“We found a 50 percent greater decline in feeling of stimulation with slow music compared with either stimulating music or quiet,” researcher Costas I. Karageorghis says. “So exercisers can use calming music to recover more quickly and return to a resting heart rate, which is good for the cardiac system.”
Aim for songs with around 70 beats per minute. (Go to songbpm.com and enter the name of your favorite tune to find out if it qualifies.)