NYT article describes how a walk in the park may soothe the mind and, in the process, change the workings of our brains in ways that improve our mental health.
And I would add, hiking in our nearby mountains! Starting early in the day works best for me -- beat the heat and let the day unfold from there. Call if you'd like to join me on a hike sometime!
This is along the trail at Icehouse Canyon, about a month ago.