Does being closer to trees and green spaces really impact your wellbeing? And how far is it from your home or workplace to a park, forest or some other green space? For one, it’s good for the climate, but it’s also beneficial for your health — both physical and mental. A study by the Barcelona Institute for Global Health found that fully adhering to the 3-30-300 rule is clearly associated with better mental health, reduced medication use and fewer visits to psychologists. Does your living environment fail to meet the 3-30-300 rule?