In addition to physical benefits, certain types of massage have been shown to help psychologically via relaxation and increased production of 'feel good' chemicals that the body naturally produces (endorphins)--helpful for people with both acute back problems and chronic back pain.
Military members accumulate 2.5 days of leave per month or 30 days per year. The maximum amount of leave that can accrue is 60 days (this can be more if a member was deployed within the year). The fiscal year ends on September 30, unless Congress decides to make a change.
Like other branches of the service, the Navy has nine enlisted pay grades, from E-1 to E-9. A new enlistee entering the Navy is an E-1 (Seaman Recruit). After about six months in the Navy, the E-1 normally is eligible for advancement to E-2 (Seaman Apprentice).