Why when boarding a plane it is better to come last than to be one of the first. Next time you'll wait, think about it. Any boarding gate in any airport in any country around the world there are impatient passengers, who will stand in a long queue even before you announce the beginning of the flight. Even if this means waiting for a permanent stay on the feet in the fixed line indefinitely - it doesn't stop them. It is their nature and they just can't afford to overcome, to calm down and relax. In addition, it is believed that passengers want to be the first to Board the plane due to the fact that they will have a large variety of places. However, we must note that during landing already known all the places where sat the passengers and therefore this advantage is not essential. In those cases, when plane tickets are sold without seats, being the first person gets on the plane, he gets the opportunity to choose more comfortable seats and avoid seats near the toilet. But this method has one big disadvantage - it can be bad for your health. We must always consider that the aircraft cabin is a closed space, where in one volume are inhabited by many types of microbes. Therefore, it is important that the plane functioned ventilation with antibacterial properties. A recent study of how microbes, if they find themselves with a sick person in the cabin, apply on it. During the study examined a variety of scenarios and processes, fit. The researchers wanted to find out exactly how the disease spreads in the plane using a sick passenger. The results showed that when passengers sit in the aircraft group in the first class or a large family, then this increases the risk that other passengers are at risk of infection. So, if the passenger sits in front and he was the first to hit the plane, then past him to sit on his place, are a lot of people - from 50 to 300 people, it is in the way any germs that people bring into the cabin. Obviously, if you are already sick and first occupied a front seat, that is a bad news for all other passengers. To help prevent the spread of disease in the cabin throughout the flight, the airline is trying to come up with such ways of passengers on Board, which reduces to a minimum the possibility of contact between passengers and reduces possible infection.