When faced with a bigger opponent, you're going to be at a disadvantage from the start. Unless there's truly no other option, try to defuse or avoid physical violence at all costs. Do your best to make peace or simply walk away, if you can. There is no shame in running from a fight, especially if you don't know how it will turn out. Your opponent may be carrying a concealed weapon, or have friends lying in wait to gang up on you. Your primary goal should be getting yourself out of harm's way.  Getting away from a violent situation before it erupts should be considered a victory. If a fight becomes unavoidable, stay relaxed. When you panic, your ability to gauge your surroundings and employ effective strategies shuts down. Keep your hands up to defend your head at all times. Your forearms should be held vertical and parallel, with palms turned inward toward your cheeks. Squeeze your fists together lightly until you’re ready to throw a counterpunch. Hunch slightly to bring your elbows down closer to your midsection to protect your ribs and abdomen from body blows.  Don’t allow your guard to fall or get lax, even when you’re tired. Dropping your guard leaves you wide open for that one good shot which could mean the end of the fight. Make sure you assume a guard from which you can quickly and comfortably deliver punches or elbow strikes. An aggressor who is bigger than you is also likely to be stronger, so it’s not recommended that you try to stop his attacks directly. Instead, stay mobile to swiftly escape from his punching range. Making him chase you will exhaust him, and with every missed attack he’ll lose a little more steam. If there’s no chance of getting a safe distance away, slide your head to the outside of the punch so that it passes by harmlessly, then immediately rush in and hit back.  Evading is always preferable to blocking because it doesn’t require you to absorb force with any part of the body. Dodging a punch using only head movement is known in boxing as a “slip.” Slipping punches is an...

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Write a summary of the previous text in Vietnamese:
Không nên đánh trừ khi bắt buộc. Đưa tay bảo vệ. Né các đòn tấn công thay vì chặn chúng. Không vật lộn với đối thủ. Chuẩn bị nhận cú đấm.