Do You Jab With Your Weaker Hand. As your recover the jab hand you quickly slide your back foot up at the same time bringing your feet back to its normal distance. The step jab offers more power than the basic jab and allows you to surprise your opponent.

By doing this you will create a whip motion which will increase the speed and the power of your jab. Having a stronger jab and a stronger lead hook are big advantages but. When you throw a jab try to move your hand in the starting position as fastest as you can.
Also it will help to create the snap on your punch.
The front arm throws the weaker jabs and is responsible for left hooks when in range. When you throw a jab try to move your hand in the starting position as fastest as you can. Defensively the front arm is not as versatile and sometimes not even used at the higher levels of boxing. Also it will help to create the snap on your punch.