Scientists from Glasgow University have proved it after making observations of 2,000 adults who are physically active enough. Most diligently exercise in the gym, while others are conditioned to exercise in a shady park or a forest edge.
The observation results showed that participants who exercise outdoors seldom experience stress-related complaints such as depression and insomnia. The research team led by Prof. Richard Mitchell concluded that the trees are very influential factors.
"This is consistent with what we believe so far that the brain likes a natural atmosphere and the response of the brain is characterized by decreased levels of stress," said Prof Mitchell was quoted as saying by the Telegraph, Thursday (06/21/2012).
In addition to relieving stress as revealed in this study, outdoor sports can also provide other benefits. The air tending to be cleaner and fresher, jogging in the forest or park can make the lungs healthier as parks and forests are free from pollution.
Given the difference between the effects of outdoor sport with the indoor, Prof. Mitchell suggested that people should take the time once a week for outdoor sports. You will get multiple benefits--your body becomes fitter and mind became calmer.