What conclusions can you infer about the heart of an adult with poor fitness

The conclusions i can infer about a heart of an adult with poor fitness is that it will beat way slower than it should be beating, and eventually give out before it was supposed too.

Poor fitness can cause your heart to start disfunctioning, and not beating the way it should be. If an adult is not exercising often, they can end up having major heart problems that can affect the way they see their future.