When someone says they have a "good appetite," it typically means that they have a healthy or strong desire to eat. They may feel hungry regularly, enjoy food, and have no difficulty in consuming an adequate amount of food to meet their nutritional needs.

Having a good appetite is generally considered a positive sign of overall health and well-being. It indicates that the individual's body is functioning properly and able to absorb nutrients from food effectively.

Conversely, if someone has a poor appetite or loss of appetite, it could be indicative of various underlying health issues such as illness, medication side effects, emotional distress, or changes in metabolism. In such cases, it is important for individuals to consult with healthcare professionals to address any potential concerns and ensure proper nutrition and hydration are maintained.