breaststroke

The rule is only on the IM; freestyle can't be butterfly, backstroke, or breaststroke.

Also free might be less affected vs something like breaststroke due to the angle of the body in the water.

The butterfly stroke in swimming was originally a faster variant of the breaststroke, demonstrating another possible response of the establishment: containerized adoption.

A swim coach told me that in 1950s people used to do the first lap of breaststroke underwater but people kept passing out.

A 25-meter/yard pool has fewer turns making them faster, much faster in breaststroke.

Where I'm from everyone is taught breaststroke by friends/family just to be able to stay afloat.

Yes, submarines swim just like how people sail the breaststroke.

After about 30 minutes of medium to high intensity breaststroke I often feel better than when I got out of bed that morning.

Thus teaching was aimed at perfecting the correct stroke for the different swimming styles, the crawl, breaststroke, backstroke, sidestroke, etc.

I’m in Australia so almost everyone who has grown up here has been taught to swim, and generally knows the basic strokes at least (I mostly just do freestyle and breaststroke).

Here’s a new one for me: At a swimming championship, some coaches had taken to quick sharp [fingers in mouth whistling] bursts on say a breaststroke when their heads come up, which then caught on with other punters.

Each of the major strokes has a distinct functional example: front crawl is fastest, breaststroke lets you sight directly in front of you with each breath (which is useful in general open water), and backstroke allows you to breath uninterrupted.