Oh, C, you’re so good to us. You know vitamin C can boost your immunity. And we’ve told you that its antioxidant power fights wrinkles. Well, on top of that, it helps your body deal with stress, too. When we’re freaking out, our bodies release free radicals, which in turn do damage and produce even more free radicals. Vitamin C—found in oranges, strawberries, guava, kiwi, papaya and more—deters free radical buildup, decreasing future stress to the system.