A row of backless chairsDid you know that how long you can stand on one leg has been linked to your body’s ‘biological age’? Yup – experts think that because the movement involves so much mental and muscular coordination, it may “undergo the fastest decline.” But speaking to HuffPost UK, former Embarrassing Bodies host Dr Dawn Harper, an author, GP, and health and wellbeing ambassador for Rangeford Villages, says it’s not the only physical test that may reveal an increase in “your risk of falls and premature death.” The doctor, who has penned the longevity book Live Well To 101, suggests another effective health test is “how many times you can stand up from sitting in thirty seconds.”&