Eating raw sliced garlic mixed with yoghurt is believed to bring you good luck. We're not sure this would have the desired effect if taken before a first date though. It's also thought to be a powerful cold remedy - which makes more sense, as garlic is believed to stimulate the immune system.
However, telling someone about your dreams before you drink a glass of water is believed to bring bad luck.
Bad things will happen to you if you sneeze while looking at the new moon. Be careful when sneezing - it's also considered bad luck to sneeze before breakfast