LCPL. James Edward Orr, 20, from the First Battalion Eighth Marines Alpha Company lifts weights made from barbed wire at a makeshift gym at an outpost in Kunjak in southern Afghanistan's Helmand province, Feb. 17.

Sgt. Jay Kenney, 26, with the 101st Airborne Division, Task Force Destiny, uses tires as makeshift weights in order to workout inside the recreation center on a quiet day waiting for an air mission at Forward Operating Base Ramrod December 10, 2010 in Kandahar province, Afghanistan.

Afghan National Police exercise at a makeshift gym at a combat outpost in Kunjak in southern Afghanistan's Helmand province Oct. 22, 2010.

A view of a makeshift gym for members of the First Battalion Eighth Marines Alpha Company at a combat outpost in Kunjak in southern Afghanistan's Helmand province Oct. 22, 2010.