I have a treadmill and an elliptical machine in my home gym/toy room and do 1/2hour on each 4-5 days followed by free weights and kettlebells. This enables me to hike in the hills 2 days/week. I think the cardio is important but training for strength, especially the core is equally essential. I quit running and skiing to save my knees 10 years ago and they are still functional. At 70 I can still hunt the mountains at a moderate pace w/ a light pack. Running on pavement can be destructive. Have fun, you can have more fun if you are fit.
mike r
