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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但以河豚君的观察来说，就算出了周边，现在能不能卖好，还是未知数。
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