Sgt. Nathan Cheng, of the 472nd Chemical Battalion, takes a pretest on the first day of Operation Holistic Warrior 2025 at Fort Jackson, South Carolina, March 21, 2025. Forty-nine soldiers from 40 units are attending OHW 2025, an annual workshop dedicated to strengthening the Army Reserve across the five Holistic Health and Fitness readiness domains: sleep, mental, spiritual, nutritional and physical. Operation Holistic Warrior supports soldiers in adopting a healthy and holistic lifestyle, optimizing their performance both on and off the battlefield. (U.S. Army photo by Spc. Zachary Potter)