You've probably heard this tip many times, so I'll keep this one short... It takes about 6 hours for caffeine to be fully processed and eliminated by your body, so make sure
your last caffeinated drink of the day (coffee, black tea, mate, etc) is at LEAST 6 hours or more before your planned bedtime.
Last week a Scottish sheriff said the
drink fuels violence, while Alcohol Focus Scotland said this week that there was increasing evidence that
caffeinated alcoholic
drinks caused particular damage in society.