Of course sports tend to select for certain body types. We watched women's high jump today -- every single woman in the final was tall and super leggy with small chests. I was joking that the recruit for high jump at modeling agencies because it's the same body type.

Gymnasts are all super small -- floor and vault specialists tend to have slightly broader shoulders than bar specialists. Sprinters have very specific anatomy in their lower bodies in order to generate enough power to get that fast that quick. Distance runners have more diversity of their body types though tend to be leaner overall. Shot putters and hammer throwers are all big. Sumo wrestlers look like sumo wrestlers.

I sincerely doubt tehre are any super high level swimmers with really big boobs. Even with tech suits the sport just doesn't lend itself to that.

Anonymous wrote:Working hard your chest muscles will make your boobs look smaller. Look at powerlifters or bodybuilders. Once you start making chest muscles working very hard, your breast size shrink.when I began bodybuilding, mine went from C to A.

If your bra band sized increased as you built muscle mass, that itself would explain the cup change. The cup volume of a 32C, 34B, and 36A are exactly the same.

And alot of swimmers have very broad shoulders.

Anonymous wrote:They start swimming as children. The ones with huge boobs drop out.

Or just don't make it to the Olympics.

[quote=Anonymous]They start swimming as children. The ones with huge boobs drop out.[/quote]

This. I'm a 34G. I swam competitively but the large boobs definitely cause a drag. My body type puts me at a disadvantage. The tall, lean, smaller chester swimmers are going to have an advantage.

Those competition suits are incredibly compressive. It takes a while to get it on, it's so tight.

I was surprised to see one of the female gymnasts in what looked like just a regular bra (seen poking out of her leotard) rather than a sports bra but I suppose maybe if them are quite small.

I am a female, small chested, 34A. Why do I have smaller boobs than you do? I would assume it's genetics. Athletes also have an inherited body shape.

Female basketball players look absolutely flat.

Obviously swimming involves upper body strength which reduces fat in the chest region. The suits also might have some sort of panel to minimize but the cut is such that breasts would go out the sides. I think women with no breasts get into sports.

Working hard your chest muscles will make your boobs look smaller. Look at powerlifters or bodybuilders. Once you start making chest muscles working very hard, your breast size shrink.when I began bodybuilding, mine went from C to A.

They start swimming as children. The ones with huge boobs drop out.

Gymnasts, at least the elite ones at the Olympics, are pretty small chested too.

Why can’t it be the swimsuit? Tech suits will make anyone look flat chested, even a 38I

To some degree this is like asking what basketball does to make the players tall.

Different sports reward different body types. So people with those body types pursue those sports.

I am a female, large chested - 38i. I’ve noticed female swimmers have not been busty or heavy chested but runners and other athletes whom I assume work out just as much or use the same chest muscles like gymnasts, are larger chested than swimmers. It can’t be the swimsuit, or the lack of body fat I have seen that as a reason online. What does swimming do to shrink breast size that other sports do not?