To dream that your fingernails break indicates that you are struggling to stay away from some circumstance or responsibility.
To dream that you are polishing your fingernails represents beauty.
To dream that you are chewing your fingernails suggests that there is a situation you feel is beyond your ability to deal with. You don't know how to handle this circumstance.
To dream that your fingernails are growing quickly indicates your wish to connect with someone. You would like to reach out to others in some way.
To dream that a man has long red fingernails indicates that he is connected to his emotions and is sensitive to the needs and feelings of others. This dream may also represent sexual desires and sensuality.