I like to swim. Do you like swimming?
Sometimes. I'm maybe a little too self-conscious about how I look in a swimsuit to do it as much as I'd like.
Ah, I see. But, swimming is the self propulsion through water for recreation, sport, or exercise. It can really tone you in places
Yes, I imagine it really would tone me if I did it for exercise. Maybe I should swim more so I look better while swimming...
Yea! Locomotion is achieved through limb movement coordination so, as you can imagine, swimming works a lot of muscles. It's a great workout
I've read that it's also a great form of physical therapy for people with severe injuries. 
It can be as swimming relies upon the natural buoyancy of the body. You feel lighter in the water
Haha, maybe thinner bodies than mine have the buoyancy you're referring to!