So you have a memory foam mattress, you have made the best choice. However, you are finding that your memory foam mattress is too firm. There are ways to ameliorate this, so don’t fret. Most of the time, the reason it is too firm is due to its heat reactive properties. In other words, the qualities that make memory foam the best type of mattress can also cause it to be too firm. It is important to understand how it works, as this will ensure you realise why it is too firm sometimes.
First up, because memory foam is highly sensitive to heat, the ambient temperature can completely change the firmness of your mattress. If you have had a cold spell, this could account for your mattress feeling too firm. Use a heater in your room before you go to bed and this will help to soften the mattress up.
Another thing is that if you use a mattress pad or topper, this could be preventing your body heat from permeating to the memory foam, thus making the bed harder than normal. Try it without the pad to see if that makes it softer. Because memory foam reacts to your body heat, anything that gets in between your body and the memory foam will insulate the mattress, meaning that it will not soften up as much as it would with nothing in the way.