6. Watzke refers to the two brains in the body. What are the two brains that he is talking about, and why do we need both of them?

The question is asking how can regular participation in physical activity improve an individual's overall health? Physical activity is a very positive contribution to a person's health, but it cannot replace other aspects, such as sleep or proper diet. It can however lead to a lower probability of a disease. Two options describe this: a. regular participation in physical activity reduces the risk of developing various diseases. d. regular participation in physical activity prevents an individual from developing certain diseases. and they're both correct.