Sleep (with blanket so you sweat it off) keep yourself hydrated (drink) drink hot beverages take medicine and let yourself rest If you have stuffy nose, let it flow out, don't force it out because blowing blocked noses can blow out your eardrum. Take decongestants, and other related medicine acc. to your symptoms, and remember to consult doctor it it gets worse after a day! When I feel a bit of cold coming I immediately drink concoctions that soothe the throat Spoiler like, tolak angin, variations of ginger teas, plain light tea, plain porridge with some nuts
Ginger honey lemon tea, any tea with actual ginger in it. Steam inhaler - the cheapest and simplest is simply a vase sort of, you put it on the table, pour boiling water, sit and lean in your mouth and nose in it. Paracetamol powder in a hot but not boiling drink. Strepsils or hard candy at least to keep that stick fluid going down the throat, Werther's original butter candies are pretty good as you can have as many as you like while you can't have more than 6 or so Strepsils a day. Menthol candy is also good. Chicken soup. Compot. I don't think climate matters. Cold climate could worsen and prolong it if you don't stay inside but that's about it.