Cold resistance? Yes, but you didn't make it clear. To be precise, it should be "cold pathogen block". "Blocking" Qi, blood and body fluids ..... Anything that can flow in the body will be blocked, making it run and flow poorly.

For a deeper understanding, I suggest you look at the pathogenic factors in the chapter on basic theories of traditional Chinese medicine.

One of them is "stagnation of cold pathogen", that is, cold will lead to poor circulation of qi and blood in human body. To put it bluntly, the blood will be "blocked" if it doesn't go. What is the reason? Thermal expansion and cold contraction.

For the simplest example, you can see that girls eat popsicles before menstruation, which will lead to stomachache. Why? Popsicle cold evil, vasoconstriction, poor blood flow, menstruation is coming soon. At this time, blood contraction is not smooth. Do you think her stomach can stop hurting? There are many other such clinical cases. Look at your foundation, let me give you a simple and common example to make you understand better.

I hope my answer is helpful to you.