Ключевые слова: 4049 years, activity, allergy, blood, business, business person, businessman, caucasian ethnicity, cramp, dental cavity, dentist, doctor, employee, footpath, human gums, illness, infectious disease, male, man, medical clinic, medicine, middle aged, mouth, moving, outdoors, pain, patient, pavement, pedestrian, pedestrian walkway, physical activity, physical injury, street, teeth, toothache, unhealthy living, walking, young,