Before the idea of vascular occlusion training surfaced, high-intensity weight training was considered synonymous with bodybuilding success. Many people believed that extreme training is key for continuing muscle hypertrophy. Such a weight training normally includes lifting a weight that is not lower than 70 percent of their 1-repetition maximum. There was also a belief that anything below this intensity cannot produce substantial muscle development. But all these were challenged by research on a fresh approach of muscle training and development.