Could be off base here, but for me an album can be a fairly emotional experience. If it’s something you’ve spent years listening to you may be feeling emotions (knowingly or otherwise) from your past experiences. I don’t know if it’s the feeling you’re feeling, but I often find myself pleasantly exhausted after a good album :) and it’s good to take a break after a couple of those, in the same way you usually wouldn’t watch several movies back to back!