Short answer: It's gravity. Here's why your nose gets blocked during massage, why it's worse for some people, and how to prevent it.
0:00 Why do people get stuffy noses during massage?
0:27 Why blood pools in your nasal mucosa
0:55 The nasal cycle
1:32 Why some people get more congested during massage
2:20 How to prevent nasal stuffiness?
2:56 Doing more massage with the client supine

The foot technique video:    • Massage Tutorial: Deep tissue foot ma...  
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