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In this intense video, a masked bodybuilder with an incredible physique puts his endurance to the ultimate test. He attaches an electrical stimulation device to his chiseled lower abdominals with the goal of reaching the maximum level of 20. He quickly discovers the challenge is far more difficult than anticipated, as even low levels produce powerful contractions. Undeterred, he bravely jumps the intensity from level 4 to 10, then to 12, and finally to a grueling level 15. With each increase, you will witness his entire muscular frame convulse with overwhelming, involuntary contractions. He groans and struggles to stay on his feet as the device sends potent waves through his body, causing his abs, pecs, and legs to tighten and spasm dramatically. See just how much this muscular specimen can handle before the extreme stimulation becomes too much.