Prone to a Lot of Things, Yes?

Night owls may be more prone to heart disease and diabetes, study finds. We're looking at the expression prone to that's right. So if you're prone to something, it means you are likely to be affected by something bad. For example, smokers are prone to lung disease, or professional footballers are prone to leg injuries. And we also use this expression prone to to describe certain negative types of behavior that people have in their personality.