What Do Antioxidants Do?
The primary job of antioxidants is to protect the body from being damaged by harmful molecules. The harmful molecules, in this case, are free radicals.
Free radicals are highly reactive oxygen and nitrogen molecules that are floating around the body with an unpaired electron. These oxidants, or free radicals, are reactive because they are searching for an electron to make into a pair. Electrons, like socks, are best when paired and become unstable when they're not (what does one even do with a single sock, anyway?)
Antioxidants get their name because they're quite literally fighting the oxidants. Antioxidants.