Großansicht des Bildes mit der Bildunterschrift: To keep nails healthy, it's important to care for them properly. We give you some tips: shorten your nails by filing them down - that will stop them breaking. But don't overdo it, or you'll end up with calluses on your fingertips. Cuticles are there to protect nails. They should only be pushed back very gently using rubber instruments - though doctors advise against doing it at all.