Did you know that a simple knuckle rub on the chest can tell doctors a lot about your health? That’s right! When you visit a doctor, they might give a gentle rub with their knuckles on your chest. This isn’t just a random gesture; it’s a way for them to check your lungs and make sure everything's okay inside. For many years, doctors have been using this technique, called … [Read more...] about why do doctors rub knuckles on chest