I am being totally serious when I say this program and the knowledge Deron brings to this program has helped me have more balance, more stamina and I know that the areas that he helps us with will keep us functioning for a long time as Seniors in this society. He has helped me strengthen my shoulders which means less chance of a serious injury to them. He has done the same with my knees. It's vital for a Senior to have strong knees. This program is worth the money, time, energy you put into it. Do it! I encourage you to!