If you wear a smartwatch or fitness tracker, chances are you have glanced at your resting heart rate more than once and wondered what it means. Whether it is your Apple Watch, Fitbit, or Xiaomi band, this small daily number has quietly become one of the most watched health signals in Singapore. What it actually says about your heart, though, is not always clear. Since heart disease remains a common concern here, paying attention to what your heart rate is doing day to day may