What caffeine does to your body and brain
Kevin Loria,Erin BrodwinJul 16, 2017, 07.39 PM
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Caffeine itself is a stimulant with some positive and negative effects. It makes most of us feel more alert, awake, and focused, but too much can also backfire.It also affects a host of processes in our bodies, including our digestion, metabolism, and vision.
Here's what's really going on after you drink a cup of joe.