I had a few Goju lessons, when I was a kid. I remember that there were some things like dive rolls that, I don't know ow thst I'd want to do at this point. I know that tkd involves a lot of kicking. I guess I'm trying to figure out which style, and I'm not interested in just jitsu or aikido, would be best for an older person, not a senior citizen, who is of average fitness level?