We don’t always have the answers, but we have some people on speed dial who do — which is why we present to you our series FYI where we have experts explain if lip balm is actually bad , how often should you wash your hair and more. Shopping for a mattress is intimidating — especially online. There’s firmness, there’s materials and don’t even get me started on the labyrinth of whether you should opt for foam, springs or a hybrid of the two. And after all that, there are pillows , sheets and a