13 August 2026

Waking up with lower back stiffness, tossing and turning through hot summer nights, or feeling every movement your partner makes? You’re not alone. The average person spends one-third of their life in bed, yet millions are sleeping on a mattress that actively works against their spine alignment.

You probably know the rule of thumb: replace your mattress every 7–10 years. But almost nobody knows why that number exists — or what’s actually happening inside a mattress while you sleep on it, night after night, for a decade.