There's a familiar moment that many people quietly accept as part of getting older. You wake up feeling well-rested, but the moment your feet touch the floor, your joints tell a different story. Your knees feel tight, your fingers are slow to open and close, and your hips seem unwilling to move with

You wake up after a full night's sleep expecting your body to feel refreshed. Instead, your knees feel tight as you climb out of bed, your fingers are slow to flex, and your hips seem reluctant to cooperate. After a few minutes of walking, however, the stiffness begins to disappear. If you've ever w