Rape_After_Hours

It's all just a gut check to see if you really want it. Most guys quit within the first 2 weeks. Yes the missions are hard and grueling, but the physical training is meant to induce stress and to see if you can still perform in spite of it. Since they can't shoot at you the next best thing is to break you with work outs. And everyone breaks. Only the ones that want it keep going. There were stories of people going through the indoc courses with broken femurs, shattered ankles, and other injuries.

It depends on how fast you heal. I can only speak for the Air Force, but you get 2 chances to make it through. If you get injured and can't train the first time, they recycle you and put you in the next available class. If you fail a second time, you're looking at discharge or reclassifying. Officers and prior enlisted get reclassed or sent back to their previous job. Candidates straight out of basic get discharged unless making it past the 5th day of training.

A lot of guys get this during special operations training. They get beat down with the crazy workouts and get no time to recover

Source: I was once a special operations candidate