Unit 6 The secret to good health.Module 3 HealthWho is he?How old does he look?Mr LiDo you know the secret to good health?He looks 60 years old.secret to good health健康的秘诀First, get plenty of sleep.足够的睡眠Second, keep a good diet.保持良好的饮食习惯Third, take plenty of exercise.有足够的体育锻炼Finally, Mr Li thinks the most important thing for( 对最重要的东西) a healthy life is to be happy( 保持开心).First, get plenty of sleep.How many hours should we sleep each night?At least 8 hours each night.至少每晚第一,有充足的睡眠。So you will feel