Swimming is considered a low-impact sport.
I have heard of that! Is it true it's best for your joints?
I would imagine so.  In some countries, lessons are even part of a student's education.
That's so interesting. My school never had a team or any physical education required by swimming, I think that would be a really good idea.
I agree.  As it relies on the natural buoyancy of the body, everyone should be able to do it.
Are there any other benefits of swimming? I know it's great cardio.
It's one of the top recrational activities as well, so people obviously enjoy it regardless of other benefits.