Many people advise you to put some warm clothes on, get under the blankets and sweat a lot to help cure flu/fever.
On one hand there is a lot of opinion on the Internet saying that it does not work, on the other I heard this advice from medical doctors and it seems to work based on my own experience (could be placebo of course). Maybe it is not sweating, but keeping the body warm that helps? That would be ok too, as sweating is just the side effect / indicator that you are really warm and that you drink a lot of liquid as required.
Is there any research / experiment / peer reviewed paper on that?