Findings reported in the International Journal of Environmental Research and Public Health, suggest that keeping a few snapshots of greenery around yourself might be beneficial. When participants viewed the natural images in the experiment, their stress levels lowered, thanks to the activation of their parasympathetic nervous system – which controls certain rest functions. "Viewing green scenes may thus be particularly effective in supporting relaxation and recovery after experiencing a stressful period and thereby could serve as an opportunity for micro-restorative experiences and a promising tool in preventing chronic stress and stress-related diseases."