Here is an idea to think about. It is perhaps good to learn self-defense skills. There are many ways that this can potentially be accomplished. There are many different ways of learning about self-defense.
Krav Maga is one way to potentially learn self-defense. It is perhaps a fairly “hard” style, and there is perhaps some risk of being injured. It is however, potentially quite likely a fairly effective method of self-defense, it seems. Tai Chi is perhaps a potential way of learning self-defense. This is a softer discipline it seems, and there is less of a chance of being injured, than in Krav Maga or Judo. Aikido is perhaps one way of learning self-defense. This is perhaps a somewhat spiritual art as well, it least it can be for some, but probably does not have to be. There are perhaps generic self-defense classes taught at a police station or somewhere similar. This may be the best option for some individuals for a variety of reasons.
Often times self-defense systems also can have a physical component and can also be useful as a way of exercising. Exercise is good for the body. One should probably not exercise too much or too little. Some governments recommend that citizens exercise a certain amount of times per week. One should probably ask their doctor or a qualified professional if they are not sure how much exercise they should undertake and/or if they are not sure if they are able to really exercise at all.
Schools and businesses conduct fire-drills increase the unlikely were to ever happen. Learning self-defense is perhaps like having an emergency preparedness plan, in case the unlikely were to ever happen. For law abiding citizens who are not in law enforcement or in the army, it perhaps unlikely that one would need to know self-defense methods. However, if the unlikely were to occur, it seems that one would likely be glad that they knew self-defense if there were ever to be a situation where they needed it, and they were able to use the skills and knowledge that they have effectively.
So, learning self-defense is perhaps good. Ponder this idea, perhaps, and possibly take some action towards learning self-defense, if it does indeed seem to be the best course of action to take.