libra81, I'm not familiar with any of your other posts about joining the military so I only have this one to go by. Your current weight sounds fine (136). In fact, our stats are very similar as I too, am trying to lose about 10 more pounds. By the time you're done with basic training you'll weigh considerably less than you do now. Maybe even less than 125! You will also be a lot healthier from all that extra exercise.

I read that link Pandora23 offered and here is a quote from it:

Caution: The Fat Fast is actually dangerous for anyone who is not metabolically resistant. For people who lose weight fairly easily, the rate of weight loss is too rapid to be safe. But it carries very little risk for people who can barely lose on any other regimen.

Judging from your stats, it appears you are not metabolically resistant. Personally, I think you'd be endangering your health.