5. Keep It Warm (Avoid Cold Drafts)

If you’ve noticed vertical ridges on your fingernails, take a breath: in most cases, they’re completely normal—a natural part of aging, much like fine lines on your face or gray strands in your hair. But that doesn’t mean you have to accept brittle, dry, or unsightly nails. With a few simple habits, you can keep your nails strong, hydrated, and healthy at any age.