I hear ya, man. I did martial arts for years, and back in January my son and I started doing Krav Maga. I feel like I'm punishing myself every time we go to the dojo. Gonna be 55 in July, and Krav is just too damn brutal for me. I already know how to handle myself in a self-defense situation (and I have had to before), and my son isn't really into it, so when our contract runs out in a couple of months, we're done. Yeah, between yard work, walking, and cycling, I get plenty of exercise.