More often than not attackers are on top of you before you ever see them coming and for this reason it is important to learn self defense that include close range fighting. While many will choose to learn martial arts for this it is important to remember that not all styles are effective at close range since many of their moves require space in order to carry them out. But styles such as Wing Chun are designed to be used in close situations making them effective for getting away from attacker who jumps you and has the initial upper hand.