Think about all the things in our lives that block the sun’s healing energy.
Sunscreens (also poison in your body)
Car windshields
Sunglasses
House windows
etc...
Anyone who thinks the sun does not cause skin cancer and burn your skin to the point of disfiguring injury or even death is a moron...
...says the Haole who lived in Hawaii for thirty years.
For one unaccustomed to sun exposure more than a few minutes can result in a painful burn. Repeated exposure may result in scars on your hide, often on your face, where the surgeon has had to excise malignant melanomas.
How do I know that? You may ask.
< /rant >
Now outside to catch a few rays on a rare sunny day in the Southeast Alaska rain forest. Hard to get enough vitamin D here at 57*N.