Are kendo and iaido dangerous?
Kendo and iaido probably have a lower rate of injury than most martial arts. Kendoka rarely incur injuries worse than a bruise, although there are exceptions of course. Iaidoka have to be extremely careful, especially with shinken (sharp swords), but in general don’t get injured very often. Both kendo and iaido are subject to the usual range of strains and soreness to be expected in any sport.