Even though taking long, hot showers sounds like the best way to fight the cold, it's actually drying out your skin, as hot water will strip away skins' natural oils.
Dry oil is another solution to this problem — many beauty products have added it to their products.
uhmm...no, it doesn't work like that
fan has not enough pull power to suck the colder air from floor level, you need to force warm air that is stored on ceiling level down so it mixes with the colder
that is much more efficient way of heating up large air volumes