With Foot Wakers, it is easy to add foot fitness to your daily routine. Use them sitting at your desk, watching TV or relaxing. Use while standing up for increased intensity. These hollow plastic half-spheres covered with knobbles stimulate the bottom of the foot, increasing circulation. You'll actually feel the blood moving upward, energizing the rest of your body and you'll be increasing foot flexibility, muscle tone, and strength. Using these is the way to begin your foot work, especially if your feet are sensitive. Watch your feet beginning to point straight ahead. The effects will provide greater ease of movement in your knees, hips, and torso!