Jiu Jitsu is an effective martial art technique that is very useful in close quarter combat. To give you an idea, here are three moves which you can use when there is a threat.
The first is called the Clinch. Most people attack by punching or kicking when they know there are in range to do so. The best way to avoid getting hit is to stay out of the hitting range or go close enough to limit his or her punching or kicking ability.
To make this happen, you have to get your head against your opponents chest then get your hands up to your forehead with your forearms so you avoid getting punched in the face. At the same time, you close the gap by leading with a leg check or a distracting kick to his leg.
You now sweep your hands out to block his biceps on each arm, trap his arms by hooking your hands over his triceps and use your forearms to control his arms. With your forehead still on his chest and by pulling his arms, you create isometric tension limiting his punch and movement.
This move is completed when you reach around his back with one arm and move to that side. Make sure that you his other arm tightly under your armpit so you can still protect...