Recently I fractured my second right metacarpal while training on the padded foam stick. I did not know what had happened until I read MRCP II MADE EASY. It is a novel by a Harvard trained physician who is also a Member of the Royal College of Physician of London ( MRCP ) and also a Royal Physician. He describes many things which can go wrong in a fight like the heart stopping ( called Commotio Cordis ) and electrolyte imbalaces and how to correct it. He is obviously a martial artist and it is a novel for both the layman and the professionals. It is a litany of ( case histories ) tales intertwined with medical facts making learning subliminal. I think that this is a useful book as part of our usual first aid kit. It is written in the style of Michael Crichton, Robin Cook and Frank Herbert. My family loves it as each case is like a series of House MD. Good luck and be safe.