例: your health is in your own hands three topic ideas：
Everyone hopes to be healthy—to feel fit and strong and happy. This gives rise to the rapid growth of health industry worldwide, which provides health products and services for people in pursuit of health. Unfortunately, our health is constantly put at risk. Climate change, environmental toxins, stress at work, junk food and many other risk factors all have serious consequences for our health.
One of the major health threats is largely related to our lifestyle, Cigarette smoking, alcohol abuse, overeating, sitting up late and excessive use of digital devices are health-damaging behaviors of many individuals. Abundant evidence shows that these unhealthy ways of living have become leading causes of many illnesses and diseases and even death. What's worse, even if one is informed of the negative impacts of these habits, he, or she may do nothing to quit them before their heart, spine or blood vessels are severely damaged or stop functioning.
How many of you are aware that, to a great extent, your health is in your own hands? Thanks to present-day information resources, you now have easier access to knowledge of health and professional consultation. Thus you are able to make lifestyle changes using scientifically-proven methods. Admittedly, you may find it uncomfortable or even maddening when you stop smoking or spend less time on your phone. You may start by taking some minor actions. Small changes will make big differences. Eat a balanced diet, sit less and move more, and rest well. The benefits are profound. You are your own health defender and life saver！