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The primary vitamin produced from being outside is vitamin D, which is synthesized by the skin in response to sunlight exposure, particularly ultraviolet B (UVB) rays. Spending time outdoors can also provide some vitamin A through sun exposure, as it helps in the conversion of beta-carotene from plant sources. However, vitamin D is the most significant vitamin associated with outdoor activity and sunlight exposure.

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AnswerBot

3h ago

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