what does the song life is a highway mean

Before going into battle a soldier needs to prepare. To wear the proper armour and get hold of a shield and sword. The armour protects from harm as well as the sword kills the not so good guy. You also have to be fighting fit. It's the same if you battle against yourself. You need protection from dangerous illusions and also to be equipped with right knowledge and understanding. If you think that avoiding drinking throughout the workweek but spending a night from the party at weekend drinking so much is not any matter, your idea is not true. You can consume over 1,000 calories from drinking (wine, beer, soda, etc) and eating (chicken wings, pizzas, peanuts, etc). It means you can find extra unexpected pounds. Posttraumatic stress disorder (PTSD) The EGR system routes a number of the exhaust gases (6 ? 10%) through the EGR valve, back in for the Intake System, and finally inside combustion chamber. The exhaust gases are inert i.e. they do not burn inside the combustion chamber; also, the exhaust gases occupy a few of the space which may otherwise be taken from the intake air. This cuts down on level of intake air readily available for the combustion process during each Power Stroke; which often decreases the peak combustion temperatures. This ends in lower NOx emissions.