Using these SKLZ Fitness Slide Discs is easy. For core strength training, you can lie on your back and place one disc under each foot. Then, slide your legs out and in, engaging your abdominal muscles. You can also place the discs under your hands during push - ups to add an extra challenge. For flexibility, try sliding one leg forward and backward on the disc while standing. When using the discs, make sure the surface is clean to avoid any debris that might affect the smooth sliding. Also, don't over - exert yourself during the exercises. To maintain the discs, simply wipe them with a damp cloth after each use. Store them in a dry place away from direct sunlight. That's it, and you're ready to start your core - building journey!