During the hot summer season, specialists and volunteers of the Children's Health and Recreation Center held an interesting and effective lesson with the younger  generation resting at the children's health and recreation center. The main goal of the lesson was to promote personal hygiene rules among children and instill a desire for a healthy lifestyle. At this event, dedicated to the topic "Cleanliness, personal hygiene", children were emphasized that hygiene rules are very important for human health. They were also taught the rules of behavior in case of emergencies. In order to attract the attention of children and increase their understanding, various games, explanatory activities and interactive methods were used. The lesson aroused great interest in the children. They had the opportunity to learn new information related to hygiene, as well as develop their skills. Such activities pave the way for children not only to have a good rest during the summer holidays, but also to acquire useful habits.