
This brings me to my point. At CrossFit more training (volume)is not better! In fact, CrossFit Endurance preaches more rest is better. It is all about quality and intensity. From the years of training and racing I suffer from osteoarthritis in both knees. Essentially I have no cartilage left it is literally bone on bone. Two orthopedic surgeons have told me I will need a knee replacement, but because of my age and activity level it is not in the near future. For the time being I get a series of Euflexxa shots about every 8 months. At least I don't have heart problems or a pace maker like the athletes in the following article. I know a few triathletes myself with hip and knee replacements. Read this post from Mark's Daily Apple, part 2 is the most interesting to me.
CrossFit is training for life which is fitness for us all not just elite athletes. So not only train hard, but rest!