You cant build a strong house without decent foundations, and you cant be an effective boxer without a the correct stance. The boxing stance or guard is the posture a boxer stands in, his/her 'on-guard' position if you like. An effective guard takes into consideration both offense and defense and the individual style of the boxer. There are many different types of boxing guard, but to get you started, here is a simple 30 second tip. Hopefully it will help your punching power and boxing defense. let me know how it goes.