Ключевые слова: back, caucasian, challenge, circuit, coach, coaching, concentration, copy space, determination, determined, effort, equipment, exercise, exercising, female, fit, fitness, four, functional, group, gym, healthy, heavy, holding, indoors, instructor, interior, lifestyle, male, man, men, modern, neck, people, physical, power, sandbag, smiling, sport, squat, squats, strength, timing, toned, training, weight, woman, women, workout, young,