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.
The military has a W-1 paygrade for warrant officers, but all Navy warrants start their commissioned career at W-2. A chief with 12 years of active duty who gets picked up for warrant will receive a monthly base pay increase of $642. All this translates to much more money at retirement, too. As an E-6, a sailor can only stay for 20 years and as a chief, 24 years.