A health certificate refers to a certificate issued by a relevant medical institution or health department to prove an individual's physical health, which is usually used for catering, traveling, going to school, working and so on. When applying for a health certificate, physical examination and examination are usually required, so applicants are generally required not to eat at least 8 hours before the physical examination to ensure the accuracy of the examination results. Therefore, you should apply for a health certificate on an empty stomach.
In addition to an empty stomach, it is necessary to make an appointment in advance for the time and place of physical examination, and bring ID cards, photos and other related materials.