I think that they are very physically healthy- bodybuilders do try to eat,  sleep and exercise in a healthy way. However many parts of a bodybuilder's lifestyle may negatively impact their social or mental health.

It depends how they work out, some end up top heavy, or with thighs that rub together. I think the healthiest physique is that of a runner. When you see nomad tribes they are slim and fit in order to hunt for their food and move from place to place.