Young 
To dream of young people indicates that you can stop worrying; you will have a fresh approach and outlook on life soon. It may further symbolize some younger aspect of your own self. If you dream of being young once again, this represents failed attempts to correct past errors or opportunities you have lost.
Arena
An arena is a place typically used for theatrics or feats with an audience, so this dream means that you need to be in an environment where you can freely express yourself, or that you need a stage or platform for your self-expression. Alternatively, it may be warning you that there is some issue or problem that needs to be revealed to people around you.
Yourself
To dream of yourself means that you are mirroring your behavior and actions during the time you are awake.
Rib
To dream of ribs embodies paucity and sadness.
Zoo
To dream that you are visiting a zoo indicates a loss of your freedom. It further symbolizes that your talents and abilities have gone unnoticed. You may feel that you or an aspect of yourself is caged in.
Conversely, a zoo may indicate confusion or chaos in your life. This feeling is exemplified by the saying 'this place is a zoo!' Consider what aspects of your life may need to be straightened out.
Age
To dream of your own age means that you fear getting old. It could also indicate remorse or disappointment regarding some effort.
To dream that someone assumed your age is greater than it is, you may stumble upon a poor relationship.
Yes
To dream of 'yes' is simply that, an emphatic 'yes' from the universe. Be sure to check the dream for alternatives in relation to aspects and environment.
Dreaming that you feel terrible emotionally while everyone is saying 'yes' may be implying that there is emotional clearing to be done before proceeding in a positive fashion.
Calf
To see a calf in a dream is an indication that you lack experience. You need to mature and develop your talents and skills.
Farm
To dream about a farm indicates that you should expand or grow certain parts about you in order to make the most of your prospects. You are in the right state of mind to mature.
Mars
To dream of Mars indicates that you will be betrayed by close peers. This will cause you great anguish and despair for a long period of time.
Desk
To dream that you are sitting at your desk indicates that you are considering situations and dilemmas that you are facing. This dream represents the sense of self-realization and recognition.
Shark
To dream of a shark symbolizes a ruthless and corrupt individual who is only concerned about himself and disregards the needs of others. The shark may also represent these same aspects of your own character. Perhaps you are experiencing a stage in your life of great distress and anguish. The shark represents harsh emotions such as rage, aggression, and violence. These feelings may harm the mental well-being of yourself and those around you.
Chest
To dream of your chest represents assertion, victory, and enthusiasm. It may also imply that you fear an upcoming conflict or altercation with someone or some issue. Perhaps this dream is reminding you that you need to unburden yourself of emotional issues.
To dream that you are beating on your chest implies that you have just achieved an important victory or have found success.