70 here. 71 in September. I totally retired at my 62nd birthday. Since then, been taking care of our place doing most work myself (including tree work requiring climb with ropes and swiss saddle, repelling down after complete), had an in-ground swimming pool put in, built another fence, an open shed with floor, hiked several mountain trails, skied several slopes in two different states, taking up skiing after retirement for first time, kayaked several rivers in 3 state, multiple class III white water, multiple day and overnight paddles with distances between 25 and 60 miles. I ride my bike, both around town, and day trips 15 to 25 miles. Basically, I do the kinds of things I have always done, but with more care, taking care of myself. I have had major knee surgery, due to a ski accident, but after surgery and intense rehab physical therapy, not only from the professionals, but carried out at the gym, I am a member of, enabling me to get back on the slopes the following year, as well as complete one of those mountain hikes of 11 miles with 4,000 elevation change. It is important to push yourself physically (pain or no pain) if you wish to continue what you like, painfree with similar abilities, but lower pace. All this, and I still get to smoke half a pack (avg) a days, while having no shortness of breath uncontrollable by how I was trained. I sleep without getting up in the night, between 6-9 hours depending on what I have going on and how late I hit the sack. So, Yes, I am officially old, but have no intention of letting it get in my way of the things I enjoy, for the next few years. Physical activity and keeping the mind engaged is the key.