If you have a flat stomach does that mean your skinny?

No, not necessarily. Having a flat stomach does not necessarily mean that someone is skinny. A person's body fat percentage, overall body composition, and muscle mass play a significant role in determining their overall health and fitness level. Additionally, genetics, age, gender, and lifestyle factors can all influence the shape and appearance of someone's stomach. It's important to focus on overall health and well-being rather than solely relying on the appearance of a flat stomach as an indicator of someone's overall fitness level.