You should not raise your hands above your head while pregnant because it may cause the umbilical cord to strangle the baby. Gum takes seven years to digest. Waiting to swim an hour after you eat will prevent cramps. Hot water freezes faster than cold. Chocolate causes acne.
Bats are blind.
You cannot get two colds in a row. Cracking your knuckles will give you arthritis. If your grandmother or mother ever told you to put a jacket on before you go outside or you will catch a cold, she was wrong. Colds are caused by touching something with a cold virus on it and then touching your nose or eyes, not from being out in the cold. You also can catch a cold or the flu by breathing in viruses directly from someone sneezing near you.