friend of Emma, ignites a Megan cigarette each opportunity that she even obtains - while she is taking a walk by the streets with his friendly in the nights of Friday, during the rests in pizzería, before skirmishes of soccer, while takes care of her brother. worried about Emma - as much for the health of its friend and by her account. It is not safe of Megan realizes of how its habit could be affecting the health of the people who smoke close. Everybody knows to smoke is a bad idea. And now you probably have listened that the breathing of another person smoke of second hand also is dangerous for its health. What is the smoke of second hand? The smoke of second comes the smoke as much that exhalan the smokers (call main smoke) and the smoke floating in the end of the cigarette, cigarette or pipe (call secondary smoke). It can seem quite inoffensive, but in fact smoke of second hand contains thousands of chemical substances - from arsenic and ammoniac one for the hydrogen cyanide - many of which have demonstrated that they are toxic or they cause cancer (carcinogen calls). The high concentrations of many of these chemicals are in the smoke of second hand. In fact, smoke of second hand significantly increases the risk of a person stops: • The respiratory infections (like bronchitis and pneumonia) • asthma (smoke of second hand is a factor of risk for the development of asthma and can bring about attacks in which it has already it) • cough, pain throat, moqueo, estornudos and • cancer • cardiac disease the smoke of second So not only the impact that a person in the future. It can at this moment cause problems, like which they affect to the sport yield or the capacity to physically be active.