You are on the verge of learning something important. Take it one step further. You have learned to respect your grandfather for his strength---physically. But he has strength in a lot more deeper ways that you can learn from too. I don't know him--but I know this to be true. Those 66 years have taught him more about being a man--about life---about values--than you can ever learn on your own from a book. As you look at your grandfather realize he is a walking encyclopedia of experiences--knowledge--maturity----all the things that you will NEED to learn to be the man. Talk to him---while you can. At any time he may be gone. Inside of his mind is your family history. There's tips in there on how to do hard things--easier. There's advice based on experience. There is life knowledge you can't get until you've spent 66 years in life's school. Arm wrestling is just the first page. There's a whole book left to read---if you just do it. Trust me---you'll be better for it.