At 18, Mike Tyson boasted an unusual 20-inch neck. Labeled a ‘Man-Child,’ he used to spar with heavyweights beyond his age, and to protect himself, he developed a strong and thick neck.

NEW DELHI: At just 18 years old, Mike Tyson followed an intense workout routine that included a unique technique called neck bridges, which helped him develop a neck circumference of 20 inches.