A Massive New Study Says This Is What Happens to People Who Drink Black Coffee Every Day Finally, we have proof that coffee is good for you, even if it does keep you awake. Note that it was doctors who spread the rumor coffee is bad for you, and dehydrates you, and it was doctors who told us real eggs and butter are bad for you, and it was doctors who hid all the evidence for PTSD and brain damage for 30 years.
Caffeine helps people get off their fat asses and do things. That helps. Then it also keeps the brain more active chasing away those nasty sticky proteins that cling to your ganglia, clogging up your bandwidth.