YES THEY DO...but remember swimmers are 6 feet plus long limbed ,long torso as well no comparioson to bbing 'stretching'muscle'lenghtning,
I'm not just talking about Olympic swimmers, just normal people that are advid swimmers, or even surfers I see out in Hawaii, they paddle all day long to catch waves, their muscles have a certain look to them, also backs are very wide, I just don't like that bodybuilder look that is all tight, bunched up, can't bend their arms type of look.