I admire your dedication. I also like the spartan look of your site.

I'm a trail runner and I've been running over 18 years or so, not every day, but two or three times a week. Sickness or health, injury, birthdays, holidays, rain, snow, -30C. My last big run was around Christmas. After that I had about three months medical off-time. Now it's very hard to get back on track. I just had to cancel some summer running events. It's not just motivation, but general stiffness and musculoskeletal pains like shin splints and knee and ankle soreness. My guess is that at my (middle) age, you either do it or lose it.

I advise anybody to find something they like and stick with it. Vary it according to how your body feels, but always do something. Keep the body (and the brain) working.