weighin

A weigh-in is the act of measuring a person’s body weight on a calibrated scale. In sports and healthcare, weigh-ins are used to verify eligibility for a competition, assign appropriate weight categories, monitor health, or collect data for research or medical purposes. Weigh-ins are typically conducted with minimal clothing and without shoes, and measurements may be recorded in pounds or kilograms.

In competitive sports, weigh-ins are commonly required to determine a participant’s weight class. The procedure can vary by sport and governing body but often includes an official date and time, verification by officials, and documentation of the result. In combat sports such as boxing, mixed martial arts, and kickboxing, weigh-ins may occur 24 hours or more before the event, with some organizations also holding a morning-of weigh-in. It is not unusual for athletes to attempt weight management before a weigh-in, which can involve dehydration or other strategies; as a result, many jurisdictions impose medical checks and penalties for failing to meet limits.

Beyond sports, weigh-ins are used in medical and clinical contexts to monitor growth, nutrition, treatment dosing, or participation in studies. They may appear in fitness programs, weight-management clinics, and research trials, where accurate weight data are essential for evaluating outcomes.

Overall, weigh-ins are a standardized measurement tool that supports safety, fairness, and accountability across multiple domains.