An improvement on a method and device of the first wearable device that increases muscle strength using a holding device containing nutrients. This invention is detailed in U.S. Pat. Nos. 8,617,590, 9,636,310, 9,510,988. With the addition of a light source module and/or a vibrating module and/or a magnetic module to this holding device, it has been found that the resulting device has a surprising and unexpected synergistic effect on muscle strength. This phenomenal increase in muscle strength translates into improved athletic performance. The resulting holding device may be in the form of a belt, locket, headband, wrist band, ankle band, pedal device, helmet, or gloves.
