These can be be used in most workout routines including running, walking, push ups sit ups and many others, to increase strength and stamina in your workout routines. These bags are filled with a propriety blend of herbs and other natural ingredients known to enhance any routine. Size depends on strength and condition. Good for up to 90 Days of use. Do Not Wash. It is recognized in East Asia and around the World, that the body has pressure points that connect throughout the body. Stimulating these points can dramatically increase your overall heath, stamina and energy. These training pearls are infused with a blend of herbs and beans to enhance the quality of your exercise. Gain more in less time using these training pearls. Includes: 1 set of Training Pearls, 1- 2oz High Performance Spray 1 set of Training Pearls Approximately 2lbs weight Exercise is not without its risks and this or any other exercise program many result in injury. As with any exercise program, if at any point during your workout you begin to feel faint, dizzy or have physical discomfort, you should stop immediately and consult a medical professional.