In fact, coffee provides the biggest source of antioxidants for most Americans... although that mostly has to do with the fact that many Americans don't get enough antioxidants from fruits and veggies, so coffee ends up being their biggest source.  You should try to diversify your sources of antioxidants from fruits, veggies, spices, herbs, berries, beans, unsweetened organic cocoa, teas, and yes, even coffee if you like it.
There’s no need to try anything crazy; the only performance enhancer you really need is coffee. Research has shown its ability to give workouts a boost and increase athletic performance, and that’s exactly why you’ll find so many Olympians drinking it: One report from the journal Applied Physiology, Nutrition, and Metabolism found the majority of the 20,686 Olympic athletes analyzed had caffeine in their urine. 

An alarming 11.8% of American men over the age of 20 have diabetes. Needless to say, it’s a growing concern and one receiving a great deal of attention in the medical community. Between 1986 and 1998, Harvard researchers tracked the coffee consumption and occurrence of type-2 diabetes of more than 40,000 men. They discovered that long-term coffee drinkers had a significantly reduced risk of developing type-2 diabetes and statistics indicated the risk decreased the more they drank. Just remember to limit your sugar!

You can improve your coffee by adding real cream. This means organic and grass-fed. Cream like this can be purchased at all major health food stores, and will give you the health benefits of CLA (conjugated linoleic acid). There is also usually a nice amount of vitamin K2 present in full-fat cream. This is important because adequate intake of vitamin K2 has been linked with lower rates of cancer and heart disease. Full-fat cream has even been linked to more successful weight loss.

Increased coffee consumption may reduce risk of type 2 diabetes - the Harvard School of Public Health (HSPH) researchers gathered data from three studies. In these studies, the diets of the participants were evaluated using questionnaires every 4 years, with participants who reported having type 2 diabetes filling out additional questionnaires. In total, 7,269 study participants had type 2 diabetes.

While they say that the results support moderate coffee drinking as a relatively healthy habit, both Poole and Guallar say the findings don’t go far enough to prompt anyone to change their coffee-drinking habits in the hopes of improving their health. The study did not confirm, for example, that people who do not currently drink coffee should start adding a cup or two a day in order to lower their risk of getting heart disease or any of the other chronic conditions studied. The data also do not support the idea that current coffee drinkers should drink even more coffee to enhance whatever benefits they might be receiving. Too much coffee, the data suggest, starts to bend the benefit curve back down.