Yoga is entirely possible through the transmission of its own physical fitness, suitable for all ages, men, women and children can exercise ~ you can also exercise through yoga meditation, both physically and mentally. My friend's point of view is wrong. Yoga is to exercise and pay attention to circulation and gradual progress. It doesn't matter if the posture is not in place, you can try to stretch to your comfortable position (this is a very important concept of yoga). Never stretch like a coach, it's easy to get hurt. All coaches and yoga masters don't have such soft flexibility at once, but they all insist on exercising step by step.