Відповідь:
1. Don't drink cold water;
2. Warm dress in bad weather;
3. Wear hat in bad weather;
4. Wash your hands;
5. Sleep seven or eight hours a day;
6. Eat fruit and vegetables;
7. Eat vitamins;
8. Do charging in the morning;
9. Walk every day;
10. Go to sleep at nine or ten o'clock;
