This double tube resistance band offers effective strength-training. Workout your arms, back, shoulders, legs, and butt all at once with mobility band, perfect for for body stretching, resistance training, yoga, and physical therapy to help strengthen torn ligaments or muscles. Persist in ten minutes a day, use the 8 shaped resistance band to perform chest expansion, stretching, and hip lifting. Soon you will say goodbye to shrugging your shoulders and having a strong chest.