3. Don’t catch cold
This has to be one of the most enduring health myths of all time and has been preached to countless children around the world for a very long time. There is no evidence that going out in the cold makes you sick. Sickness is caused by a virus or bacteria, many of which probably don’t survive as well in very cold environments. One theory suggests that people tend to get sick more often in the winter, not because of the cold, but because they spend more time indoors sharing their germs.