It never makes me perky or anything but it keeps me on my feet
I completely collapse when it wears off haha

Lol same here I need it to function properly if I'm forced to stay awake like in school.

It makes you hyper and giddy, like you can never stop moving. Depending on your tolerance, it might just give you a slight edge or you may feel like you can run a marathon without stopping. If you have too much though, you'll probably start shaking.