Even if you’ve never had the urge to lace up a pair of running shoes, you can’t help but feel inspired by 42-year-old Deena Kastor. This fall, she’ll return to the Bank of America Chicago Marathon—a race she won a decade ago—aiming to run 26.2 miles faster than any American woman age 40 or older ever has. Over more than 20 years of logging miles and winning races, Kastor has absorbed a lesson or two about running. Read the full article for Prevention.com.