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Back sleeping promotes spinal alignment (as long as you properly support your head and neck with a pillow) and some research has shown it may help reduce lower back pain. People who experience neck or shoulder pain may also want to experiment with back sleeping (also called the supine position), since it takes pressure off joints by distributing your body weight more evenly.
，更多细节参见纸飞机下载
СюжетКонфликт Израиля и Ирана
change propagation early.
This story was originally featured on Fortune.com