So over the years I've always wondered what is the advantages and disadvantages of running with weights. Being in the infantry we to a lot of heavy movements some of which we run based on time constraints. What kind of effects does this have on the body. Is the juice worth the squeeze? So to speak. I know running is high impact already and adding weight to that cannot be very healthy in my opinion. I see these old infantry guys walking around at age 35, but looking 65. As a leader it is my job to protect my soldiers and insure that they are doing what is right for their bodies. My questions are: If it's not so taxing on the body then.... How much weight is too much? Mass/weight percentage wise. Does distribution matter a whole lot? What are the long term effect on the body? What are the results of this form of training? Thoughts?