University of Utah cognitive psychologist David Strayer found that nature recalibrates our mind. While being out in nature for any time has cognitive and emotional benefits, in Strayer’s research, he noted a “three-day effect,” a parting of the clouds and clearing of the mind after a few days camping in the wilderness. As he told National Geographic, “On the third day my senses recalibrate—I smell things and hear things I didn’t before. . . . If you can have the experience of being in the moment for two or three days, it seems to produce a difference in qualitative thinking.”