I hike at least ten hours a week (I live in the mountains) and go to the gym once a week. Your advice is excellent. My Dad is in good shape at 98 and he does th

I hike at least ten hours a week (I live in the mountains) and go to the gym once a week. Your advice is excellent. My Dad is in good shape at 98 and he does thirty minutes of Canadian Airforce Exercises early each morning (he started doing this in 1964).