Your answer would be depressants. Such as alcohol.
No, it isn't. They are diseases.
Your personal fitness is what you make of it. A physically demanding job can be beneficial if you also support it with a nutritious diet and maintain proper health. But if your job is physically active and you eat more than needed, it does not matter how much you are working, because you are still consuming more calories than you are burning.
Answer:
There is no possible way to prevent this.
Explanation:
Unless you count not skating at all. Her luck isn't on her side. Well, she could've used a railing or double skates.