Sure, here is a sample questionnaire for surveying the lifestyle habits of people in Vietnam: 1. Gender: - Male - Female 2. Age group: - Under 18 - 18-25 - 26-35 - 36-45 - 46-55 - Over 55 3. What time do you usually go to bed on weekdays? 4. What time do you usually wake up on weekdays? 5. How many hours of sleep do you typically get on weekdays? 6. Do you have a consistent bedtime routine? (e.g., reading, meditation, etc.) 7. On average, how many meals do you eat per day? 8. Do you typically eat breakfast? If yes, what time do you usually have breakfast? 9. What are some common foods or drinks that you consume for breakfast? 10. Do you have any dietary restrictions or preferences? (e.g., vegetarian, vegan, gluten-free) 11. How often do you consume traditional Vietnamese dishes in your daily meals? 12. Do you tend to eat out or cook at home more often? 13. What are some popular snacks or beverages that you consume during the day? 14. How often do you drink coffee or tea? 15. Are there any specific health-related goals that influence your food choices and eating habits? (e.g., weight management, energy levels) 16. Do you engage in any physical activity or exercise regularly? If yes, how often and what type of activities do you participate in? 17. How would you describe your overall lifestyle in terms of health and wellness? (e.g., balanced, active, sedentary) 18. Any additional comments or insights about your daily lifestyle habits that you would like to share: Thank you for participating in this survey! Your input is valuable for our research on lifestyle habits in Vietnam. This questionnaire aims to gather information about the sleeping patterns, eating habits, and food choices of individuals living in Vietnam to gain insights into their overall lifestyle practices. Please note: This questionnaire is designed for research purposes only and all responses will be kept confidential.