COVID-19 Outbreak (Update: More than 2.9M cases and 132,313 deaths in US)

PurpleBlack&Gold said
It takes about 20 minutes with 50% of your skin exposed to get enough for a week.

So, which half are you exposing? The front or the back?

So, about 10% of my skin exposed for 20 minutes, 5-7 days a week should do the same?