Fall is the time when a combination of colder temperatures and stress fills the waiting rooms of medical centers with people snoring. As cold and flu season is upon us, we can protect ourselves by systematically strengthening our immune system. We present to you 5 things that damage our immune system and 5 things that strengthen it - so that we know what to do if we want to use as few tissues as possible in the coming months and be full of energy despite the season!