Are some people excluded from sumo wrestling?
Currently only men can become professional sumo wrestlers. Every wrestler belongs to one of the more than 50 sumo stables, and to be eligible for entry into a stable, candidates must be at least 173 centimeters (about 5 feet 8 inches) tall, weigh at least 75 kilograms (165 pounds), and be under 23 years old (or between 20 and 25 years, if one has performed fairly well in college- or adult-level amateur tournaments).