It's the season of giving and receiving, but it's not so welcome when the topic is the cold or flu. Before getting together with friends and family for the holiday, people may want to be on the lookout to make sure no one is sick. To prevent catching any illness, experts say it only takes one easy step. Wash your hands for 20 seconds, then use a paper towel to turn off the water. And if you're not feeling the best, stop and think: Is it really worth getting a loved one sick?