The posters and ads I saw made me aware of the need to wash my wrists as well. Can’t say I paid them much attention for hand washing before this.
I’m pretty much stuck at home alone so once I’m indoors and I’ve sanitised my phone and earbuds I’m not washing my hands unless they need it. I don’t wash my hands after I pee at home although I do when I’m out. Always wash hands before handling food, kitchen items etc. Always wash after bringing in shopping, post etc. Always wash after coming in from the garden (unless I end not touching anything at all).
Wash my hands before going out and as soon as I’m indoors, even if only to the shop over the road. When I’m in the shop (one afternoon a week) I’ll wash my hands about once an hour and definitely before and after touching anyone or handling money.
I’d agree that if you’re not washing your hands for 20 seconds you’re not being thorough. And I make sure to scrub my fingernails too, when I can and definitely on coming indoors.
I’m so much more aware of the things I touch these days, and just of when I touch stuff.
It makes me think of biblically muddy festivals, how conscious you need to be to keep the mud out of your pockets, wallet, hair, tent etc. Once I clicked onto how similar it is to be on duty for the virus and for the mud, I just dug into the learned skill and that made it easier. Just that quick mental check “did I touch that... is this clean... what order should I do this in to stay clean...?”
I made a decision to stop sterilising my shopping. It was taking so long, the reports about viral particles on surfaces as a vector for the illness were reassuring, no one I spoke to who was not doing it had got sick, and I was in danger of becoming pathologically OCD about it. So I worked up to it for a week and then gradually reduced the cleaning I was doing. I’m still far more careful than I ever used to be, like I’ll discard most wrappers and store stuff in containers, but I no longer wash everything down.