My exercise routine is pretty simple: I walk and hike. I take fast walks near my home as often as I can, covering about 6 miles (10 km) in 1 hr. 20 min. I hike as often as I can get out, too. Three years ago my typical hike was 8 to 10 miles, with 1,500 feet of climbing. I'd be pretty tired when I finished. But, by hiking 500 to 600 miles a year I now do much longer, harder hikes for the same effort. This summer, I did one day hike of 29 miles, the longest of my life. I am 66 years old. It helps me to maintain a journal where I record all my hikes and fitness walks. You can do it, too. Just lace on your hiking shoes and start walking.