Fire is represented by the colours red, orange, pink and purple. Within the human body, fire governs the heart and blood vessels, the small intestine, the complexion, the tongue and speech. An excess of fire energy can cause hot flushes and heavy perspiration, leading to blemishes or a flushed face. You may also experience palpitations, irregular heartbeats, an erratic pulse and mood swings. Other symptoms include strained speech, stuttering or hoarseness. In contrast, a deficiency of fire energy will manifest itself as decreased libido and blood pressure or even congestive heart failure. Your complexion may turn ashen and you may suffer from rashes or eczema. Your breathing may become shallow and you may have a tendency to hold your breath, as well as difficulties concentrating and forgetfulness. Within your environment, excessive fire energy is caused by the use of too much red or orange. In the natural cycle, fire is exhausted by earth. Consider using beige or earth tones to reduce the fire energy. Don't let candles burn in your bedroom for too long. Fire is produced by wood. If the fire energy within your environment is low, introduce wood colours such as green or plants in areas such as the living room. Plants should not be placed in quiet yin areas, such as the bedroom.