Ice-cold watermelon on a steamy summer day really hits the spot. But you'll be best served by keeping it on your countertop until cutting time.

Whole watermelons stored at room temperature deliver more cell-protecting antioxidants (specifically lycopene and beta carotene) than refrigerated or freshly picked melons. Here's why.

A Chilling Effect
After it's picked, watermelon continues to ripen and build up antioxidants. Cold temperatures appear to cut this process short. So leave your watermelon out, as long as you haven't sliced it. After it's cut, it should be stored in the refrigerator for food-safety reasons.

For an ice-cold treat, chill the fruit right before serving.
And don't forget to wash your watermelon before cutting it to avoid this.