Please choose the correct ending to complete the given sentence: Health: [header] How to get out of a funk [title] Get some sun. [step] A lack of vitamin d may result in mild depression (a funk), which is sometimes related to the changing seasons. Fortunately, the sun's rays provide all the vitamin d that you need.

Ending1: [substeps] Each day, try to get out in the sun with your face and legs or arms exposed for 20 minutes. That is enough time to absorb vitamin d without damaging your skin. Ending2: As a result, the seasons change more frequently, and your moods will quickly improve. [substeps] Even people who want to be cool during the cooler seasons will suffer if there is a long line of snow and cloud cover. Ending3: Try to get at least 8 hours of sunlight a day. [substeps] This may be particularly important if you live in a warm, sunny climate. Ending4: The sun can even stimulate nerve endings throughout the brain (the neuroticism called melatonin), which is a receptor that defines anxiety and mood in humans. [substeps] You can like the sunlight or take advantage of the benefits of sun, especially earlier in the day.

Answer format: ending1/ending2/ending3/ending4