will 400 mg of caffeine have any negative effects other than lack of sleep? is there anything i can do to burn it off/wear it down
You'll feel shitty after it wears off. Caffeine is a terrible drug, controls your life if you let it.
anyone else?
It'll lower your patience as well.Caffeine works by turning things off in your brain. This is why if you have too much coffee, you can't focus.