drinking essence of chicken during exams?

the first week of term 4 has just passed and im not glad.
theres like less 7 days to the EOYs
End Of Years = End Of You and me = EOY
i read in a newspaper report that the sales of Chicken Essence peaks at the Term4 period, just like how sales of Christmas cards peaks at Christmas.
i feel that this is mainly due to the parent's efforts in hoping that their children can score better marks. i dont think any child would want to drink it on their own.
however, the only benefit of Chicken's Essence is that there is an increased amount of concentration due to high sugar levels in the essence, which means it is equals to High GI ( glucose index)
the lower to glucose index, the more healthy the food is. besides, the chickenessence only boosts the ability to concentrate for a short amount of time, where thereafter the drinker will feel less energized.
therefore, it can be concluded that chicken's essence is not really useful.

but being singaporean, we like to be kiasu.we like to think this can help,
while it cannot...