It’s worth considering that, in addition to the large review that found people with lower back pain benefited most from medium-firm mattresses, a smaller study that looked at sleep quality in people with an average body mass index (BMI) also found that medium-firm mattresses led to better sleep outcomes.
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15:00, 6 марта 2026Культура，详情可参考PDF资料
Breakdown of U.S. retail packaging by weight. Adhesives, inks, and coatings are excluded from calculations.