In studies conducted by scientists at the University of Michigan in the United States, alongside the Universities of Otago in New Zealand and Canteerbury, the effects of nature on people's psychological health have been carefully analysed.
According to these tests, the vision of water and other blue surfaces have positive effects on our health. The more we look at the blue spaces, the lower the level of stress. Although we are always talking about how relaxed we feel amongst green nature such as parks and forests, these scientists have not found a direct connection unlike they have done with the blue landscapes.
The explanation for this difference between green and blue colours may be due to the fact that blue spaces have been created by nature, and we associate them in that way. On the contrary, green spaces are associated by the human mind to both natural areas and human creations, such as urban parks.