Fitness people in gym on step board; strengthening the abdominal muscles

• abdominal muscle, abdominal muscles, active, activity, adult, aerobics, attractive, beautiful, body, cheerful, colorful, exercise, female, fit, fitness, four, friends, group, group exercise, gym, gymnastics, handsome, health, instructor, man, muscles, muscular, people, person, powerful, shape, sit, slim, smile, sport, sportive, step board, strength, strengthening, stretching, trainer, training, triceps, warming, women, workout, young
• ID: 79904326
• Published: 26Jun2011
• Model: 12411304 12411310 12411313
• 5430 x 3620 pixels