When considering how to make a mattress firmer, it is also important to consider the type of mattress you are using. For example, an air mattress can be made firmer simply by pumping in more air, while a memory foam mattress might be soft because it is too warm. It helps to understand the factors involved in your mattress becoming too soft.We are not discussing age … [Read more...] about 10 Tips on How to Make a Mattress Firmer