Ключевые слова: activity, adult, caucasian men, caucasian women, crossed arms, exercise, exercise room, female, fitness studio, flexibility, grey hair, group, gym, health, healthy, high angle view, instructor, leisure activity, lifestyle, looking at camera, male, mature, men, people, practicing, selective focus, senior, sit, smile, sport, sportswear, together, training, training class, wellness, women, workout, yoga mats,