If you've noticed ripples on your nails or other abnormalities, it's likely more than just cosmetics. Beau's Lines, as they are known, are deep grooves in the nail and occur because your nail matrix stops producing cells. This is due to a lack of nutrients in your bloodstream, which can be caused by an infection or high fever.

For more ways that your nails reflect what's happening in your body, watch this brief video about 5 things your nails can say about your health.