When doing extreme skiing, even if you don't wear protective gear, you can still take some measures to reduce the chance of injury: 1. **Choose the right skiing venue**: Beginners should choose ski slopes that are suitable for their level and avoid areas that are too complicated or dangerous. 2. **Improve skiing skills**: Take skiing courses or seek guidance from professionals to improve your skiing skills and confidence. 3. **Do a good job of warm-up exercises**: Warm up thoroughly before skiing to activate your body muscles and reduce the risk of injury. 4. **Master basic techniques**: Learn how to fall correctly, such as falling to the side to reduce the impact on the joints. 5. **Stay in physical condition**: Maintain good physical fitness and flexibility, and strengthen the strength of the core muscles, which can help improve balance and control. 6. **Control speed and posture**: Control the sliding speed in time and maintain the correct sliding posture to avoid sudden acceleration and turning. 7. **Pay attention to weather and snow conditions**: Understand weather changes and snow conditions, and avoid skiing in bad weather or ice and snow conditions. 8. **Focus when sliding**: Stay alert, observe the surrounding environment, and avoid collisions with other skiers or obstacles. 9. **Proper rest**: Take a break in time during skiing to avoid excessive fatigue and misjudgment. 10. **Go skiing with others**: Try to ski with friends, in case of an accident, having a companion can provide help. By taking the above measures, the risk of injury while skiing can be reduced to a certain extent.