Alright, so to start, I'm not highly knowledgeable in martial arts and fighting styles... I practice shotokan karate, and I am at 5th kyu. Not sure how much that detail will matter, but I will put that out there if it is necessary. Anyways.
My health has been alright as of late, but I really want to push myself to get into shape. After thinking about it, I realized that boxing training is quite intensive, and might give me what I'm looking for. However, I'm not quite sure if it would have a negative effect on my karate skills; boxing habits leaking over into my karate stances and whatnot.
So, all in all... is it a bad idea to add boxing training on top of karate?