From Boing boing;
ADDITIONAL ETA: commenter Lalalianaresists posted this twitter thread which calls into question a lot of the information in the video. Take what you will from both of them;
ETA: I have not been doing any of these things myself. Maybe a bad thing? I don’t know. But I know that some people are unsure of what the “best practices” would be, and these seem to be fairly stringent.