I have always done that. I don't like to read stuff that's too intellectually intense or stimulating in bed, so I opt for some sort of fiction or history. Durin

I have always done that. I don't like to read stuff that's too intellectually intense or stimulating in bed, so I opt for some sort of fiction or history. During the day I might read something like philosophy or technical/sciencey when I'm more awake. If something is especially mentally taxing I might opt for something lighter. Doing this I might read up to four or five books at once, but always at least two. Reading should be fun and if you feel forced to read a certain book you'll be less inclined to do it, having options helps a lot.