Thank You. I Am 63 And For The Past Year,

Thank you. I am 63 and for the past year, I get tired very easy and I sweat with very little effort. I am use to hard work. I retired as a foul time firefighter and a welder four 30 years, and have been farming raising crops and meat steers. I have been very fit. But now my energy level is very low. my BP is 150/70,pulse 85-90, RES 16-20. No health problems. I have had my blood checked and my Dr. tells me every thing is in a normal range. He tells me i'm just getting older. I so do not drink or smoke. I do take a blood presure pill and tramidal for RLS. I have din married for 37 years and the kids are grown married and on there own. Also my wife is feeling tired also, are we just getting old? I don't think so . my Mom and Dad lived and worked till 97. What are we missing?