Yijin Jīng（易筋經）, also called Classic of Sinew Metamorphosis, is an ancient Chinese Qi Gong exercise. In general Chinese, Yi means „ Change“, Jin means „ muscles and tendons“, Jing means a classic book containing methods, experiences and knowledge. “Yijin Jing“ is a great Qigong exercise to improve our health by changing our fascia, ligaments or tendons and the condition of our organs. The breathing is coordinated with one’s calmed mind and body. The goals are strengthening the muscles, bones and sinews, improving breathing and inner Qi (life energy), as well as smoothing the meridians. The benefits include: reducing chronic pain, back pain, high blood pressure, stress and anxiety. Improving blood circulation, sleep quality, balance, flexibility, muscle tone and posture and more.