I already sun whenever I can. And swinging is easy to do anywhere. I've tried it and will keep doing it. I love these free and simple solutions. I never realized that the swingset we had in our yard as kids was so good for us.
Sometimes if I'm presented with a whole book, I don't do any of it because I get overwhelmed with all the info. Suggesting one thing to start with was helpful of you.
It seems unnatural to stare at computer screens for long periods of time. It's no wonder our eyes are affected.