16-year-olds who don't study at such a young age have the energy to think about some healthy, interesting, and challenging lifestyle. Here are some possible choices: 1. Learn some new skills: You can learn some skills that you are interested in such as painting, music, dance, cooking, programming, etc. These skills could make life more colorful and improve one's ability and self-confidence. 2. Take part in sports activities: Sports can exercise the body and enhance physical fitness. At the same time, it can also improve self-confidence and social skills. They could participate in some of their favorite sports such as running, swimming, yoga, basketball, and so on. 3. Exploring new places: You can go to places you have never been to before, such as traveling, exploring, trying new food, etc. These experiences could broaden his horizons and allow him to understand different cultures and ways of life. Cultivate a healthy lifestyle: You can maintain your health through healthy diet, adequate sleep, and appropriate exercise. These healthy habits can make the body healthier and also enhance self-confidence and self-management. Do something meaningful: You can do something meaningful, such as helping people in need, participating in volunteer activities, contributing to society, and so on. These experiences could make him feel meaningful and valuable, and at the same time, improve his morals and values.