8 year military vet. The most physical strenght required to pass any basic training is a few pullups for the marinesand push ups and sit ups by the others. This will be well accomplished by your drill instructors who have years and years of expierience making even the weakest men strong. And if I'm not mistaken the blood work for enlistment checks for out of line T levels. Just do the hard work and at the end you'll feel a lot better about your accomplishments