I've got in the habit of reading around two hours a day. I mostly read about astronomy and science in general.
The books i'm currently reading are Beginning Chemistry and The Handy Astronomy Answer Book. And a couple of math books.
How about you?
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I never time myself, but it also depends on the book. My current book is still unfinished, but that's because I'm far more into it than I have been of any recent book I've read. The more I'm into it, the more time I'll spend reading it.