Don’t worry, be happy and, according to a new research, you will also be hea

Don’t worry, be happy and, according to a new research, you will also be healthy.
    It is estimated that over the course of one year, Americans suffer 1 billion colds. But new research shows that all it may take to avoid this common affliction is a positive and upbeat attitude.
    People who are happy, relaxed and energetic, are less likely to catch a cold than those who are depressed, nervous or angry, according to a new study published in the journal Psychosomatic Medicine.
    Healthy volunteers were first asked to rate their tendency to experience positive and negative emotions - how often they felt pleased, relaxed, happy, or anxious, depressed and hostile. The subjects were next given a squirt up the nose of a rhinovirus (鼻病毒), the nasty little germ that cause colds. Researchers then watched the volunteers to see who came down with a cold and how the unlucky ill manifested their cold symptoms.
    "We found that people who regularly experience positive emotions, when exposed to rhinovirus, are relatively protected from developing illness," said Dr. Sheldon Cohen, lead author of the study and a psychology Professor at Carnegie Mellon University.
    Although positive people showed a greater resistance to colds, negative people did not necessarily get sick more often . So how can your emotions influence your health? In simple terms, when the brain is happy it sends messages to our organs that help keep the body healthy and sound.
    In addition, happy and relaxed people are prone to better health practices than their negative and stressed counterparts. They are more likely to sleep well and to engage in regular exercise, and to have lower levels of certain stress hormones.