Swimming is a potential deadly sport - you could drown.

With this in mind, I learned the technical aspects of swimming which forced me to focus on the here and now. If you are not focussed you make mistakes which can lead to swallowing water.

I did this in order to swim longer and faster. I finally grasped the highly meditational aspect of swimming and enjoy it.

Even though I prefer running over swimming nothing comes close to swimming in regards to meditation.