Ok, Wanted to get more advice. After posting for some reading on Ninjutsu, I decided it wasn't enough and went to two classes about an hour from me, on Thursday evening and Saturday morning. The results were not spectacular. According to my doctor this afternoon I had a dislocated left shoulder, broken metacarpals on my right hand, strained right groin, strain lower right back, and an over sense of brokenness and humility. Thursday i felt my shoulder pop as I was "placed" on the ground after a joint lock (by a 110 lb female). Saturday two mins into practice I pulled my groin doing some sort of side roll. 10 mins after that when practicing knife attack defense, my training partner stuck my otter right hand with a knuckle attack about 50+ time, and "gently" guided my fat a$$ to the ground all the while testing the pain threshold in my wrist, elbow and shoulder areas. I need to add that I'm a 37 year old man that is 6'3" and 300lbs. Im severely overweight and I haven't exercised in the last decade unless you consider pumping gas, squats off the toilet after taking a dump, taking out the kitchen trash, or brushing my teeth as exercise? Ive been more sedentary than a grazing pregnant cow over the last decade. SO with all that, you know the condition I entered these two sessions in. My real question here is, am I just too weak or is the training too intense? Is this the normal for dojo's and practice partners? Im no martial artist but I would think that you would dial back the insensitive in which you perform the joint locks and attacks not just the speed at which you are preforming them. What is the standard % speed/pressure you normally use in practice. The movement speeds were slowed to 10-20% I would guess but the locks and the tension was seemingly allowed up to 70-90%. I was in heavy pain with each demonstration performed on me. The other issue is the 2nd part of these movements. So the lock and tension come first then its to the ground. Well a 300 lb man can't go to the ground well on his own much less with his arm locked up and someone throwing him down. It was a recipe for disaster. Anyway is this just normal or am I in a bad dojo, or do I just need to give up martial arts until a grow a larger set of kahonas? Lastly I'm looking for any style of ninjutsu closer to me. Ive loaded this map of North Carolina to see if any of you know of anywhere within my willing driving distance to train. Thank you all!