12-20-2009, 02:42 PM
As others have said, it depends on what level of fitness you're looking for. I maintain a comfortable level of conditioning and the main aspect is a 2 1/2 mile run 5 days a week. The run is moderate with 3 or 4 interval sprints on a hilly route. A few push ups and pull ups are done for warming up. This approach has worked for me for over 15 years and at 72 I feel great. So to say that running is not beneficial is not quite correct. A site I like with good tips along these lines is http://www.marksdailyapple.com/primal-bl...an-basics/.