No sick or symptoms for the past 2 winters. Living in France, I have been in the past years extremely distrubed by winter and cold weather. I was worried all the time to get sick (cold, flu, bronchitis, I even had pneumonia 6 years ago and went to the emergency room than hospitalized). Starting 6 years ago I escaped the European Winter to very hot, low-cost, countries, with outside air temperatures most of the time around 35°C to 42°C and even above. I love so much when the temperature is hot. But, in spite of the hot weather I got sick with bronchitis (so sick that my body temperature was as high as 39° to 40°C) in 3 very hot places: Mauritania, Sudan/Etiopia, Bangladesh/Thailand, and I had cold symptoms in Kerala, India. Now, thanks to Wim Hof, this is the second winter not only without bronchitis but without any symptom of cold, nose running, stuffy nose during day or most disturbing during night, catarrh/phlegm, throat ache. Nothing. None. Nada. Niet. The temperature in my bedroom is often around zero, I keep always the window open (under the cover I am warm hahahah).