Why do a ribs show when he is not too skinny?

It's important to understand that visible ribs on someone who isn't visibly thin is not necessarily a sign of health concern. There are several factors that can contribute to the appearance of ribs, and it's not always indicative of being underweight or malnourished.

Here are some reasons why someone might have visible ribs even if they aren't considered "too skinny":

* Body Composition: People with a higher percentage of muscle mass and lower body fat tend to have more visible ribs, even at a healthy weight. This is because muscle is denser than fat, and the ribs sit closer to the surface of the body in these individuals.

* Genetics: Some people are genetically predisposed to have a more defined rib cage structure, even if they maintain a healthy weight.

* Body Type: Individuals with a lean, athletic build may have more prominent ribs, even if they are healthy.

* Posture: Poor posture can also make the ribs appear more prominent.

* Lifestyle: Regular exercise, especially certain types like running or swimming, can build muscle and lead to more defined ribs.

However, if you are concerned about your own rib visibility or have other concerns about your weight or body composition, it's always best to consult a healthcare professional. They can assess your individual situation, including your weight, height, body composition, and overall health, to determine if there are any underlying issues.

Remember, focusing on overall health and well-being is more important than simply aiming for a certain appearance.