What essential characteristic must every Marine maintain for combat readiness?

Maintaining a personal commitment to physical fitness is an essential characteristic for every Marine in ensuring combat readiness. Physical fitness is foundational to a Marine's ability to perform effectively in high-stress, physically demanding environments. It influences not only individual performance but also affects units as a whole, as physically fit Marines can endure longer and handle the rigors of combat more effectively.

Being fit enhances stamina, strength, and agility, which are crucial for a variety of tasks encountered in combat situations, from carrying equipment to engaging in prolonged engagements. Moreover, a commitment to physical fitness reflects discipline and dedication, qualities that are vital in a Marine's professional ethos and overall effectiveness as part of a team. Without a strong emphasis on physical fitness, a Marine might struggle to meet the demands of their responsibilities, impacting both personal performance and unit readiness.