Think you're at risk of a stroke? Then try standing on one one leg for at least 20 seconds, a new study says. Japanese researchers had nearly 1,400 women and men, with an average age of 67, try the balancing act for at least a minute—and found that those who lasted less than 20 seconds were more likely to have already suffered a small stroke, WebMD reports.
Such strokes are considered a serious contributor to dementia and mental decline. People who can't go 20 seconds "should receive increased attention, as this physical frailty may signal potential brain abnormalities and mental decline," says chief study author Yasuharu Tabara.