Please choose the correct ending to complete the given sentence: Health: [header] How to choose heart healthy winter foods [title] Purchase kale. [step] Kale is a strong leafy green vegetable that can continue to thrive in cold weather. This vegetable is also excellent for heart health.

Ending1: It contains lower levels of nutrients and antioxidants than other leafy choices. Drink at least 1.06 cups (475 ml) of kale per day. Ending2: Kale is an excellent source of omega-3 fatty acids in the human body. [substeps] In general, leaf kale is high in omega-3 fatty acids and can be found in leafy greens, turnips, bell peppers, and salad greens. Ending3: It contains antioxidants, such as carotenoids and flavonoids as well as omega-3 fatty acids. [substeps] Try making a kale salad or kale chips. Ending4: Snacking on sliced kale during the winter can have a stimulating effect on your heart. [substeps] Kale cut into slices works well as a winter treat.

Answer format: ending1/ending2/ending3/ending4