For those who sleep on their front or back, a firm or very firm memory foam mattress may be more up your alley. This firmness will provide increased support for your spine and joints. The additional benefit of memory foam is that it’ll respond to your body shape, providing even more support and comfort while sleeping in this position.

Memory foam softens and moulds to the contours of your body on contact with pressure and heat. This means that memory foam mattresses tend to feel softer than spring mattresses as they are designed to provide extra cushioning where you need it. However, that’s not to say you can’t mix up the firmness.