Fitness is a lifestyle commitment for me, and not just something to jump into prior to the season. I'm primarily a runner. I have done 12 marathons (including Boston 3x). I also cycle and do intense whole-body conditioning--weight and resistance training, core work, Yoga, plyometrics and stretching. It admittedly is an issue to integrate the conditioning workouts into my running program. That often means two-a-days. But, I feel better today than I ever have! A contributor to that was recently giving up alcohol and coffee, and I love wine! I have always eaten a low fat, low sugar, low salt diet, but I never ate breakfast consistently. I have started doing so, as well as getting at least seven hours of sleep a night. I don't get tired during the day, my thinking is clearer and I think even my vision is a bit better. A vital element of any conditioning program that is often overlooked is rest . You make gains not during a workout, but during the recovery period. So, for me at least, the balance of cardiovascular and strength training, proper nutrition and rest, all wrapped into a consistent, progressive program leading up to a goal event is what keeps me going. By the way, I'm 64, 5'11", 142 lbs and have a 32" waist--and proud of it at this stage of life. The best part though, is keeping up with my 40-yr old son climbing canyonsides chasing elk!