5 exercises that will help you test your body’s flexibility and guess your body age group. Prepare yourself for anything because the results may be unpleasant. Warm up before you try the exercises: you can either jump, do squats or leg swings. And now that you're ready, let's find out your true body age with - Shoulder Joint Flexibility , Spine Flexibility, Neck and Shoulder Girdle Flexibility, Hip Joint Flexibility, Knee Joint Flexibility