Swimming is a skill that people float upward under the buoyancy of water and make their bodies move regularly in the water by virtue of buoyancy.
Medley skills:
1. Individual medley must be performed in the order of butterfly, backstroke, breaststroke and freestyle. Each stroke must complete a quarter of the race distance.
The medley relay must be carried out in the order of backstroke, breaststroke, butterfly and freestyle.
3. In individual medley and medley relay events, each stroke must comply with the relevant provisions of the relevant strokes. In the process from backstroke to breaststroke, swimmers must touch the pool wall in backstroke position.
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