Well, on the infantry side of the house thing like forced marches, ground fighting (MCMAP), field training, and live fire exercises all take a toll on the body.

Well, on the infantry side of the house thing like forced marches, ground fighting (MCMAP), field training, and live fire exercises all take a toll on the body. Most of the training requires brute force and most of the Marines because they are young don't take care of their bodies as much as they should. The other side of the equation is the fact that complaining about being hurt or injured tends to be looked down on. Everyone pretty much has a suck it up attitude. In my 20 years I beat my body up pretty bad and I am paying for it now. I have had a couple of surgeries on my shoulders. I have bad knees, lower back, and some neck issues that I am trying to rehab and make better but I will never be 100%. I'm just shooting for less pain and more mobility. Oh, and for going right back into the same activity after you injured yourself. That is just the job. The training keeps going. In a wartime situation you would not be able to quit if you get hurt. You just have to keep moving.