Different jobs have different physical requirements. When one goes through their medical examination at MEPS, one is assigned a Physical Profile, which is a series of numbers that indicates the member's medical condition in designated medical areas. In order to reserve a job, one must meet the minimum physical profile required for that job.
Some jobs, especially those designated as "direct ground combat" jobs are restricted, by law, to males only. Some jobs (especially in the Army and Air Force), require a minimum lifting ability, which must be demonstrated before the job can be reserved for the recruit.
