The sun helps your body produce vitamin D , often called the "sunshine vitamin." When ultraviolet B (UVB) rays from sunlight hit your skin, they convert a chemical in your skin (7-dehydrocholesterol) into vitamin D3. This vitamin D3 is then processed by your liver and kidneys into the active form your body can use

. Vitamin D is essential for many bodily functions, including helping your gut absorb calcium and phosphorus, which are crucial for strong bones. It also supports immune function, reduces inflammation, and aids in muscle health

. The amount of sun exposure needed to produce sufficient vitamin D varies depending on factors such as skin pigmentation, age, latitude, season, and the amount of skin exposed. For example, lighter-skinned people may need about 8 to 15 minutes of midday sun exposure on arms and face during spring and summer, while those with darker skin may require longer exposure

. In summary, the sun provides the energy your skin needs to produce vitamin D, which is vital for bone health and overall well-being