Dialogue:

W: Hi, Mike. What have you been up to?

M: Not much. I started exercising.

W: Trying to get in shape?

M: Yeah, and I need to start improving my health.

W: Me, too. What are you doing besides exercising?

M: That's about all.

W: I think if you eat better, it will also help a lot.

M: Sleep is important, too. I heard people who sleep an average of eight hours a day have less health problems.

W: Looks like there are a lot of things to do to stay healthy.

M: True. But I think it is worth it. When you get older, you want to be healthy and active.

W: Absolutely.

Question: How many ways to keep fit are mentioned? 

- 2.

- 3.

- 4.


3.