How long do you spend in the shower each morning?

I think I read once you are 'supposed' to spend something like just 3-4 minutes? I know I spend at least double that. In winter I find myself getting dry skin, especially on my back and I think it's probably from the hot water but who wants to get out when the bathroom is freezing cold? 😄

Update - this got 'bumped' and I'm getting new answers now, I have to say I don't feel so bad about my 8 minutes given some of the replies :)