Probably not. But no less, either. You may not have noticed in your rabid desire to sling innuendo, but I never said anything whatsoever about the practicality of their techniques. Nor am I going to. As it happens, I consider Hapkido (by whatever creative name is applied) to be an eminently practical art in most respects. It's not perfect, and it does have weaknesses, but that's true of every system. And every practitioner. Actually, yes. Try a break and fail, and you'll find that the rebound of energy hits back plenty hard. Harder than a punching bag, certainly. Do you use a bag in your training, or do you only ever strike living opponents who are striking back? But of course, what you're really saying here is that you don't understand the reasons why breaking may be considered a useful training tool. Gosh, if nobody (other than you, of course) is allowed to have an opinion or offer a possibility for consideration, this is going to be a pretty boring place.