Dreaming about a non-specific man represents your masculine characteristics such as dominance, strength and aggression. You may need to draw on these qualities to help with a situation in your waking life, or they may simply be lacking in you.
If your dream is about a specific man, think about the characteristics you associate with him and these may be ones that you feel you should incorporate more of in to your character.
If you are a woman and dream about being in the arms of a man this represents your desires to be safe and secure.
You may literally be looking for a man to look after you, however you could also view it as an urge to improve your own sense of security and become more contented with your life.
If you dream about an old man, this symbolizes a quest for wisdom or explanations about what has happened.