吃新鲜芹菜可获得大量的抗氧化物。

Almost 95% of celery is water, but that doesn't mean the vegetable doesn't have significant health benefits. Celery contains potassium, folate, fiber, and 30% of your daily requirement of vitamin K. There are only six calories in a single serving.

芹菜的水分含量多达95%，可是这并不表示芹菜就没有重要的营养价值。芹菜含有钾元素、叶酸、纤维、以及日常所需30%的维生素K。而每份芹菜的热量只有6卡路里。

You're best off eating celery when it's fresh, though. The vegetable loses many of its antioxidants within five to seven days of being purchased.

但芹菜最好趁着新鲜吃。如果芹菜贮存时间长达5到7天，里面大部分的抗氧化物就会流失掉。

Kale

羽衣甘蓝

Kale is light in calories — one cup of raw kale only has about 33 calories — but it contains close to three grams of protein and 2.5 grams of fiber per serving.

羽衣甘蓝卡路里不高——一杯 It's one of the relatively few foods that contains an omega-three fatty acid, a nutrient that most people rely on fish to get. Like other kinds of lettuce, kale is also high in vitamins and folate.

含有Omega-3脂肪酸的食物很少，羽衣甘蓝是其中之一，绝大多数人摄取这种营养物质得靠吃鱼肉。跟其他种类的莴苣一样，羽衣甘蓝也富含维生素和叶酸。

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