Health for me is to be out in nature as much as possible. That doesn't me you have to go out running, hiking or fishing or whatever outdoory-stuff that comes to mind first. It's simply to be surrounded by the sound of nature (rippling water, birds, leaves in the wind, bumblebees in the apple blossoms). Last weekend we did a day trip to Mälaröarna. First some flea markets at Ekerö and then we randomly stumbled upon the most beautiful place Stockholm has to offer - Äppelfabriken at Färingsö <3 It was love at first sight.
Conclusion: Go there!