Ключевые слова: abs, activity, adult, alone, amateur, attractive, background, beginner, body, care, casual, caucasian, clinic, concentration, daylight, european, exercise, exercising, freshman, guy, health, healthcare, healthy, home, house, human, indoor, indoors, layman, lifestyle, male, man, mat, natural, one, ordinary, ordinary man, people, person, plank, position, regular, single, sport, sporty, start, stretching, training, workout, young,