I took Krav Maga for about 6 months.
Heck of a work out.
But it does take dedication, training.
Life happened and I had to move.
Currently the nearest one to me is an hour and a half, one way.
I have done Judo too, but the other martial arts do not interest me.
I think being physically fit will put you ahead of a sizeable portion of the population, more so in a post-SHTF situation.
I am not going to go out and run a 18:05 3mile like I did in the USMC. If I can do 24 minutes or less, I think I am doing ok.
But I know full well there are younger men who can still outrun me. I am closer to 50 than I am 30.
Choose your battles carefully.