Coke contains high level of caffeine, which will be able to keep one’s nerves exciting and help increase one’s appetite. There are several kinds of people that are highly inadvisable to drink coke:

① Newly-married men: Coke could greatly harm the sperm and affect one’s fertility.
② Children: Caffeine will cast a strong stimulant effect on one’s central nervous system.
③ Pregnant women: Caffeine inhibited normal fetal development.
④ Smokers: Caffeine will possibly stimulate certain body mutations in some organs under the effect of nicotine mutagen.