I have been out for 4 years now. I would not trade my time in the Corps for anything. I was 0311 ground pounder! I did 2 years at Camp Lejune, NC. During that time I went to Cali. for CAX (Combined Arms Exercise) for 2 months, did a 6 month Mediterrainian float (1 month of that was in Bosnia), 3 month tour in Panama. I wa then transferred to 8th & I, Marine Barracks Washington D.C., where I joined the one and only USMC Silent Drill Team. I was the only one on the Team with more than 2 medals and I was the most senior except for the platoon Sgt. USMC Blues are the best looking uniform in the armed forces, but the Blues coat w/ the white pants were the $hit!!
As for the working out part... you may as well hang up the weight belt if you are going into the infantry.