Congratulation on that first day ken nubo...
I watched that video... lots of energy there... however if you don't use protection for your knuckles while hitting that bag... you are going to tear the skin off... and won't be able to punch for sometimes... (and don't give me that "gotta be tough crap") ...I have a black belt in kyokushinkai karate... and I know that when your knuckles are raw and bloody, you have to stop hitting the bag until they heal... otherwise they will get infected and then you'll have to take a long vacation...
BTW... one way to toughen up the skin on those knuckles is to dip your hands in water than pour salt on the knuckles and let them dry... but, it does take time...
I'll be following your progress... and, good luck to you...
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