I read a really interesting book called Squat Everyday by Matt Perryman which basically questions all the conventional wisdom about training and recovery protocols. The author studies neuroscience, psychology, physiology, methodologies from strength athletes of the past and Olympic weightlifting teams and puts together a pretty interesting argument about what the body / mind is actually capable of. I highly recommend this read if you are a fitness nerd.
I think no matter what you just have to know your own body. I could not squat everyday.