This method does work , My ND uses this method of alternating hot and cold towels. The person is placed on a bed and a warm to hot ( heat is based on your comfort level) towel placed on the chest then your wrapped in 100% cotton sheet tightly covered in wool blanket usually for 15-20 minutes the towel is removed and replaced with a cold towel for 15-20 minutes and it is alternated between the hot and cold towels for 60 to 90 minutes. They end with a cold towel and suggest in the evening putting on 100% cotton socks that have been soaked in cold water wringing the excess water out and then putting them on and then putting a pair of wool socks over the cotton ones and going to bed. This will decrease inflammation, increase blood circulation, balances digestive and detoxifies and purifies the organs liver, kidney, lungs, intestines and skin. This will increase the blood flow to the area. I had this done for sinus infection and it worked wonders.
My gradmother used this remedy for any cold or flu that settled in the lungs. I remember having to endure it myself.
Take two hankerchiefs or just two small light weight pieces of cloth and put them in a bowl of ice water. Wring them out and lay one on the victim's chest and one on the back. Next, put on a sweat shirt, and then put on a heavy WOOL, (and this must be pure wool) sweater or a wool blanket or anything that is pure wool on top. Both layers must be tightly fitting. In my case, because I was so small, they used safety pins to bind them.
Then the victim, er, patient was put to bed and after a few hours the fever and chest cold was gone. I used it on my daughter back in the 60's and it worked like a charm, but there was a lot of yelling about those ice cold handkerchiefs.