I enjoy driving out into the jungle for some vigorous nature exercise, naked except for a thin layer of vaseline over all my skin. I do make sure I am out of sight of people, who would not understand my naturist fetish.
Ahm understands me, and understands how healthy this activity can make you.
Do get environmentally friendly, and suck your girlfriend's cock in the open fresh air, with no one watching but two coconut trees. If you really want to know how good it is, watch the video.