我聽人地講話~
考試前eat朱古力有助思考!!
係咪真架?!
係真ge話~咁係點解?!
當中有咩成功有助思考?!
THX!!

Chocolate may keep yourself alert and excited since it contains a lot of sugar, theobromine and caffeine. I think this is the reason someone says chocolate helps him perform better in tests.

what is the theobromine??

theobromine = 可可碱
http://en.wikipedia.org/wiki/Theobromine

安多芬, 苯乙安