as somebody that watches what I eat, just healthy eating is not good enough. If you don't exercise, you loose muscle, replaced by fat. Even if your weight st

as somebody that watches what I eat, just healthy eating is not good enough. If you don't exercise, you loose muscle, replaced by fat. Even if your weight stays the same, your fat/muscle ratio will change, and you wont look good, or feel healthy. Exercise is a must. Gym, running outside, playing co-ed sports (soccer, volleyball, whatever) are a must. If you don't at least one of them, your body will suffer.