Watch these two Popular Science editors quit their coffee habit

"I feel so brain dead I can't even speak." Find out what happens when two editors from Popular Science quit their six-cup-a-day coffee habit for two weeks.

From the YouTube description:

Caffeine is the most widely used psychoactive drug on the planet. Like all good things in this world, it should be consumed in moderation-but PopSci editors Jess Boddy and Claire Maldarelli were definitely not following that unwritten rule, guzzling between six and ten cups of coffee per day. That put them at risk for disrupted sleep, heart palpitations, unusual nervousness, and more. So they decided to detox. Will their torturous 14-day cut regulate their sleep patterns and teach them to respect caffeine for the powerful drug that it is? Find out on this week's episode of Test Dummy.