Technique: • Lie face down • Bring your hands close to your shoulders • Look forward • Push your body upwards with your arms keeping your hips on the ground   Primary muscles: External and internal intercostals. External and internal obliques. Transversus abdominis. Rectus abdominis. Secondary muscles: Psoas major and minor. Iliacus.   Injury where stretch may be useful: Abdominal muscle strain. Hip flexor strain. Iliopsoas tendonitis.   Note: For those who spend most of their day sitting, such as office workers or drivers, the muscles of the front of the body can become inflexible and extremely tight....

Technique: Sit on a Swiss ball Roll the ball forward slowly as you lean back Rest your back and shoulders on the ball Allow your arms to hang on each side   Primary muscles: External and internal intercostals. External and internal obliques. Transversus abdominis. Rectus abdominis. Secondary muscles: Pectoralis major and minor.   Injury where stretch may be useful: Abdominal muscle strain. Chest strain. Pectoral muscle insertion inflammation.   Note: For those who spend most of their day sitting, such as office workers or drivers, the muscles of the front of the body can become inflexible and extremely tight. When...