"Chocolate contains many substances that act as stimulants, such as theobromine, phenethylamine, and caffeine," Dr. Bryan Raudenbush from Wheeling Jesuit University in West Virginia.

西弗吉尼亚威林耶稣大学的布莱恩博士说：“内有有兴奋作用的物质，如可可碱、苯已基以及咖啡因。”