A Complete Collection of 100000 Whys
Fav十万个为什么
为什么侧睡容易流口水？
简单的摘要：侧睡容易流口水的原因主要是重力作用导致唾液流动、腮腺受压增加唾液分泌以及吞咽动作减少。
1、重力作用：侧睡时，由于重力作用，唾液会自然流向较低的一侧，即脸朝下的那一侧，导致口水容易流出。
2、腮腺受压：侧睡时，面部受到枕头的压迫，特别是腮腺（唾液腺之一）可能被挤压，导致唾液分泌增加，进一步增加了流口水的可能性。
3、吞咽动作减少：在深度睡眠时，吞咽动作会减少，无法及时将唾液咽下，尤其是在侧睡时，唾液更容易从嘴角流出。
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