What takes the biggest hit is your immune system when fighting through the drudgery which is the Winter and cold season.
We’re usually in closed indoor quarters with others, attempting to survive illness, often at times cooped up with dry artificial heat sources, forced to remain stagnant for indefinite periods of time.
This is when the sniffles will invariably begin, the uncontrollable sneezing and coughing fits which will generally plague people.
What you can do however is take a bit of preventative action now, this by eating the right foods …