Is swimming a good way to build up muscles?

Answer 1

Swimmig doesn't build muscles, but keeps them strong and elastic.

Swimming make a beautiful body shape, line, strong arms and legs.

Swimming helps the cardiovascular system well

Swimming is an aquarobic exercise

Answer 2

Swimming is beneficial in so many ways! Not only does it help with muscle strength and tone, but also with flexibility, endurance, and cardiovascular fitness. It's a low impact sport - which means your body doesn't take such a 'hit'. Swimming also helps maintain a healthy weight, and healthy/strong heart and lungs.

Answer 3

Yes and no. Take a look at two of the best swimmers ever:

Muscles? You bet. But would you say they had "built up" muscles if you saw them fully dressed? Probably not.

Consider the other extreme.

The point is, find something you like doing that's healthy. Do it a lot, and before long you'll look a little more like other people that do that activity. 

In the meanwhile, forget about how you look and enjoy what you're doing. That's far more attractive in a person anyway.