It's a well-known fact that vitamin D is important for bone health. But it's important for other reasons as well.

Low levels of vitamin D can increase the risk of heart-health issues, including heart attacks and strokes. While you do obtain some vitamin D through diet, the best source is sunlight. So now, while the evenings are short, it's important to make a concentrated effort to get some exposure to the sun.

Ten minutes of sun exposure is enough for people with light skin -- those with darker skin will need a little extra time. Try going for a walk during your lunch hour -- it's a perfect way to get your daily dose of sunlight while getting a little extra exercise as well.