side stroke - Students, Britannica Kids
![](https://cdn.britannica.com/45/62745-004-B03F7209.gif)
![](https://cdn.britannica.com/29/198829-004-794D1519.jpg)
farm machinery - Students, Britannica Kids
![](https://njswim.com/wp-content/uploads/Swim-Strokes-for-Young-Swimmers.jpg)
Swim Strokes for Young Swimmers - Njswim
![](https://cdn.britannica.com/73/76773-138-F3638F50/swimmer-wall-speed-flip-hands-half-twist-body.jpg)
Swimmer's freestyle stroke demonstrated
![](https://cdn.britannica.com/43/62743-004-F3B6CCDE.gif)
butterfly stroke - Students, Britannica Kids
![](https://cdn.britannica.com/82/63582-004-655E6DC5.gif)
brain and spinal cord - Students, Britannica Kids
![](https://cdn.britannica.com/49/115249-004-14D1F54A.gif)
cardiovascular system - Students, Britannica Kids
![](https://www.mdpi.com/brainsci/brainsci-10-00024/article_deploy/html/images/brainsci-10-00024-g001-550.jpg)
Brain Sciences, Free Full-Text
![](https://cdn.britannica.com/28/196828-004-48880A49.jpg)
tennis - Students, Britannica Kids
![](https://cdn.britannica.com/33/181233-004-B40F3C0C/artery-micrograph-plaque-cross-section-buildup-tissues.jpg)
Cardiovascular disease, Symptoms, Causes, Treatment, & Prevention
![](https://cdn.britannica.com/53/252253-004-D757F5BF.jpg)
swimming - Students, Britannica Kids
![](https://cdn.britannica.com/36/187836-138-498D3401.jpg)
alligator - Students, Britannica Kids
![](https://pub.mdpi-res.com/bioengineering/bioengineering-10-00648/article_deploy/html/images/bioengineering-10-00648-ag-550.jpg?1686132391)
Bioengineering, Free Full-Text
![](https://cdn.britannica.com/42/112042-004-F456970F.gif)
percussion instrument - Students, Britannica Kids
![](https://cdn.britannica.com/78/43678-004-8F18BDDF.jpg)
painting - Students, Britannica Kids