Why should you not try to feel for an individual's pulse using your thumb?

The correct reasoning for not using your thumb to feel for an individual's pulse lies in the fact that your thumb contains its own pulse, which can interfere with the ability to accurately assess someone else's heart rate. When you press your thumb against another person's artery, you may actually feel the pulse of your own thumb instead of the pulse of the individual.

To accurately determine a person's pulse, it's best to use your fingers, such as the index and middle fingers, as they are more sensitive and do not have a significant pulsation of their own. This allows for a clearer assessment of the individual’s pulse rate and rhythm. Understanding this concept is crucial for providing accurate health information for those you are supporting.