Wild swimming has grown massively in popularity in recent times. Not only is swimming outdoors a pleasant way to enjoy the sunshine, fresh air and green leafy surroundings, it can also help to relieve stress and elevate our endorphins. This creates a sense of wellbeing as well as burning calories and exercising muscles.

(SOURCE) https://www.cnn.com/travel/article/swimming-pools-vs-wild-swimming-wellness/index.html