Ключевые слова: abs, abs muscles, active, activity, adult, athletic, attractive, beautiful, beauty, body, caucasian, equipment, exercise, extended plank, female, fit, fitness, fitshaped, group, gym, health, healthy, healthy lifestyle, indoors, instructor, machine, medical, meditation, muscle, people, pilates, pilates reformer, plank, planking, reformer, rehabilitation, sport, sports, sportswear, sporty, strong, studio, together, trainer, training, woman, women, workout, yoga, young,