There’s no such thing as the best mattress for everyone. Not when there are so many different sleeping positions. However, most people are side sleepers. The numbers vary by study and how rigidly you define a side sleeper, but between half and three-quarters of people sleep on their side. (The older and heavier you are, the more likely you are to be a side sleeper, and it’s recommended that pregnant women sleep on their side.)
Firm mattresses are nice for back sleepers, but side and stomach sleepers may typically prefer a softer