"Overall, I think I'm in pretty good shape, but I'm not really someone that is gung-ho or a fitness fanatic"

Cobi Jones is recommending that he remains in great physical condition, but he is not overly passionate about physical fitness or workout. He is indicating that he is not a fitness fanatic, indicating he does not consume over his physical health or take severe measures to stay in shape. He is most likely suggesting that he takes a more moderate approach to fitness, taking part in routine exercise and consuming a healthy diet plan, but not going to extremes. This quote shows a well balanced technique to physical health, which is very important for total health and wellbeing. It is very important to remain active and eat healthy, but it is also crucial to not end up being overly consumed with physical fitness. Cobi Jones is recommending that he has found a healthy balance between the 2.