Final answer:
Leaning the head backwards to stop a bleeding nose is false. Instead, sit up straight, lean slightly forward, and pinch the soft part of the nose while breathing through the mouth for 10-15 minutes. Apply a cold compress for additional help, and seek medical care if bleeding persists.
Step-by-step explanation:
To stop a bleeding nose, it is false that one should lean their head backwards. This old advice is actually not recommended because tilting the head back can cause blood to flow into the throat, which could lead to coughing, choking, or even vomiting. Instead, one should sit up straight, lean forward slightly, and pinch the soft part of the nose just above the nostrils for about 10 to 15 minutes. Breathing should be done through the mouth during this process. Placing a cold compress on the bridge of the nose can also help to constrict blood vessels and reduce the blood flow. If the nosebleed does not stop after this period or if it's due to an injury or comes with other worrying symptoms, it's important to seek medical attention.