Dialogue between the importance of exercise

Explanation:

There is a dialogue between two friends named Helen and James about the importance of taking regular exercise.

James: Hello Helen, How are you?

Vicotria: I am fine James , You ?

James: I am fine, have started doing the physical exercise from a few weeks.

Vicotria: Why? you already look fit.

James: Yeah, but I got to knew that physical exercise is important for your health.  

Vicotria: How?

James: Physical exercise allows your body parts to move which require a high amount of oxygen to produce energy.

Vicotria: So

James: Our heart has to supply oxygen at a faster rate and lungs have to breathe at a faster rate. This improves the stamina of the body. Also, with this, the bran also receives a maximum amount of oxygen which relaxes our mind.

Vicotria: So u mean that physical exercise is important for mental health also.

James: Yes, a healthy mind can live in a healthy body.  

Vicotria: Other benefits.

James: Yes, a person remains free from many diseases, remains fit and healthy, improves social health, improve healthy sleep and many other benefits which can be experienced after exercise.

Vicotria: Thanx, now I will also do exercise.

which sentences ? that question is incomplete