How frequently are weigh-ins required for all active duty Marines?

Active duty Marines are required to undergo weigh-ins bi-annually, which means they are weighed twice a year. This requirement is part of the Body Composition Program that aims to maintain the physical fitness and operational readiness of Marines. Bi-annual weigh-ins help to monitor and assess changes in body weight and composition over time, allowing for timely intervention if a Marine exceeds established body fat standards.

Regular assessments ensure that all personnel maintain a healthy weight and body composition, which is crucial for overall performance and effectiveness in military duties. The other options do not align with the established guidelines for active duty Marines, as more frequent (monthly) or less frequent (quarterly or annually) assessments do not ensure the same level of monitoring and accountability.