Memory foam is made to contour to your curves and cushion your joints. When you sleep on a memory foam mattress, you get great motion isolation and near-perfect pressure relief − but thermoregulation takes a hit. That's bad news for hot sleepers and anyone who lives in a warm climate.
Out of all the mattress types, memory foam is the worst for retaining heat. All that dense foam leaves little room for air to flow. Still, that doesn't mean you have to throw out your memory foam mattress and spend thousands on a brand-new bed. There are easy, affordable ways to keep your mattress cool.
