Keywords: US Navy 110128-N-6999H-042 Sailors participate in circuit training during a morning group physical training session at Joint Base Charleston-Weapon.jpg en CHARLESTON S C Jan 28 2011 Sailors participate in circuit training provided by physical trainer Riley Phelps during a morning group physical training session at Joint Base Charleston-Weapons Station Circuit training allows personnel to focus on a specific muscle group through various workouts which will help build endurance over time U S Navy photo by Mass Communication Specialist 1st Class Jennifer Hudson/Released 2011-01-28 110128-N-6999H-042 Navy http //www navy mil/view_image asp id 97416 U S Navy photo by Mass Communication Specialist 1st Class Jennifer Hudson PD-USGov-Military-Navy Joint Base Charleston |