When you're young you have plenty of agility, and you move easily, however, as you age, well that's another story. Your muscles can become stiff, and you may find you're not as flexible as you used to be. You may feel aches and pains after simple exercise, that you never felt before. To counteract this, it's important to stay flexible so that your mobility is not impaired.To maintain your flexibility and mobility, you need to keep active through physical...