But there’s one thing that does apply to you, no matter how fit you are, and that is the mix of different kinds of exercise we’re recommending (eventually aerobic exercise at different levels four days a week and at least two days a week of strength training). That mix is as important to everyone. If you concentrate only on one sport or activity, you inevitably ignore some muscle systems. As you get older, your body will get less and less tolerant of that kind of concentration. The systems and muscle groups that you’re ignoring will atrophy and raise hell with the rest of your body. That’s
...more
