Still, I have Advance Wars 2 to hand, and trust me, given how I feel tired and need some stimulation to keep me awake, I will need it.
Update: Things got lively after all. I'm actually kinda working now. However, still felt tired - but Ribena (with its ridiculous levels of sugar) helped.
To point out, Ribena has 14g of sugar in every 100ml of drink.