how does this make sense?

[dannyday5821]

last night, i didnt have any tea, was too knackered after work so just went straight to sleep at 2100. woke up at 0530, got to work at 0700 - didnt have break until 1030, so naturally was starving! - anyways, no breakfast left in canteine, so just had some crips.

i felt fine when i started work, alert and wide awake.
after eating them crisps, now i feel really tierd again, lathargic and like i wanna go to sleep or pass out.

how does that make sense?

[4getmenot]

You body has used its energy digesting the crisps and as you didnt have much energy to start with thats why you are tired. You ever had a nig sunday roast and just wanted to sleep on couch after?

[Mamjet]

you could be possessed by a demon? A Chinese lethargy demon would be my debt. Little *******

[lil123]

Because crisps are junk food and you need nourishing food in order for your body to feel alert.
I am like that with sugar so I avoid it and eat healthy I always carry fruit around with me

[moonshadow]

Next time eat energy boosting food such as a banana and drink lots of water as your body cannot generate energy without it. The crisps will only give you a very short fix.