Freestyle swimming has been included in every modern Olympics. Currently, freestyle is contested in more Olympic events than any other stroke, at distances of 50m, 100m, 200m, 400m, 800m, and 1500m.

In particular, studies suggest that people with arthritis, neck and back problems ... When done with the correct technique, swimming strokes involve rhythmic breathing that can trigger the ...

Each swimming stroke has specific rules designed to ensure that no swimmer gets an unfair competitive advantage over another swimmer.