https://www.sciencedirect.com/science/article/pii/S10538119183006...

  1. 7,670 Posts.
    lightbulb Created with Sketch. 3
    https://www.sciencedirect.com/science/article/pii/S1053811918300673
    cant access this one anymore but you might be able

    https://www.sciencedirect.com/science/article/pii/S1053811918300673
    this is good although unrelated to cold , but still shows the internal changes with certain breath work .


 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.