How To Duck Under Left Hook in Boxing

You will need to know how to duck under a left hook in boxing, in order to become a good boxer.  The left hook can be a very deceiving punch, as it can seem to come out of nowhere.  However, with some practice and increased awareness, you can learn how to duck under the left hook in boxing.

1. Be ready to duck when your man's hands are high.  As you can't duck under a low hook, you only need to be ready to duck under a hook when it is thrown high.  Get used to noticing when your opponent's hands are high.  You don't have much time at all to duck, so be ready in these situations.
2. Force your body straight down while still covering.  The motion should be quick, where you force your back downwards very quickly.  While you are ducking make sure you still cover, as you never know what's coming next, and you may have misjudged the "what" or "where" of the punch.
3. Practice with a double-ended bag.  The double-ended bag is a great way to work on defense if you don't have a partner to spar.  Work on ducking over side to side movements of the bag, which will help emulate the direction of the hook. 
4. Work on quickly recovering from your defense.  You will need to be able to respond after ducking under the left hook.  Take advantage by quickly going on the offensive, since after throwing a powerful left hook a boxer will take a second to get back to fighting position.  The right side of the body (from your perspective) should be open immediately after the left hook.