1. It can protect against type 2 diabetes
A 2014 Harvard study found that increased coffee consumption slashed participants' type 2 diabetes risk by 11%. In the same study, participants who drank less coffee increased their diabetes risk by 17%.
2. It pumps up your metabolism
That caffeine boost goes way deeper than you thought—a number of studies have shown that caffeine boosts metabolic rate by anything from 3-10%, and boosts fat-burning by up to 29%. Taken before a workout, caffeine will also boost your performance by increasing adrenaline levels in the blood.
3. It can protect your heart
Though there's still some conflicting evidence on this, a Harvard analysis of 36 studies found that coffee is actually more likely to protect you against cardiovascular disease than pose a risk, with three to five cups a day providing the greatest benefits.
4. It can protect against several cancers
5. It can protect against Parkinson's disease
Several studies over the years have shown an inverse relationship between coffee consumption and the risk of developing Parkinson's disease. The most famous of these studies in 2001 showed that the biggest benefit comes from four to five cups of coffee daily—that amount cut Parkinson's risk almost in half.
6. It can protect against depression
Four cups a day might be the magic number, because a 2011 study found that drinking that amount of coffee (or more) lowered women's risk of depression. More dramatically, a study two years later found that people who drank two to four cups a day had a 50% lower risk of suicide than those who drank little or none.
7. It makes you smarter
It's not your imagination—you really are sharper after that morning cup of coffee. Once caffeine is absorbed into the bloodstream, it triggers the release of several neurotransmitters like dopamine, which in turn lead to enhanced firing of neurons. This improves your mood, energy, reaction time, and general brain function.
This article originally appeared on Cosmopolitan.co.za. Minor edits have been made by the Cosmo.ph editors.