Nature can have a positive impact on our immune system in several ways. Spending time in natural environments, such as forests, parks, or near bodies of water, can help reduce stress levels, lower blood pressure, and improve overall well-being. This, in turn, can have a positive effect on our immune system by reducing inflammation and boosting immune function. Additionally, exposure to sunlight can help our bodies produce vitamin D, which is important for a healthy immune system. Being in nature also exposes us to a greater diversity of microbes, which can help strengthen and train our immune system to better defend against pathogens.