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缺點:但是,選擇枕頭時壹定要考慮高度。枕頭太高,頸部肌肉會被拉伸,無法自然放松。如果整夜不睡,就會脖子疼,頭疼,甚至“落枕”。標準的枕頭要高6 ~ 9厘米,不硬不軟,彈性適中。
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枕頭通常是指人睡覺時放在頭下,具有壹定柔軟度的物體。人體的脊柱從正面看是壹條直線,但從側面看卻有四個生理彎曲。為了保護頸部正常的生理曲度,維持人們睡覺時正常的生理活動,人們睡覺時必須使用枕頭。枕頭壹般由枕芯和枕套組成。