BASIC COMBAT TRAINING-From TC 3-22.20

4-2.   The training program in BCT provides foundational fitness and fundamental motor skill
development. New Soldiers report to BCT at various levels of physical readiness and ability. During
the first weeks of training, the focus is on progressive training of the whole body. To minimize
the risk of injury, Soldiers must perform exercises precisely. Also, their intensity must progress
gradually. The toughening phase BCT training schedules in Chapter 5, Planning Considerations, when
executed to standard, provide the proper training intensity, exercise volume and gradual
progression appropriate to improving physical fitness and controlling injuries. Commanders should
evaluate each new Soldier who falls below the BCT standard and give special assistance to improve
deficiencies. Supplemental training should not punish a new Soldier for the inability to perform
well. Commanders and PRT leaders need to realize that it takes at least six to eight weeks to begin
positive changes in physical fitness levels. Therefore, some Soldiers may require additional time
to make the improvements required to meet Army standards.