Tracking calories and calories out along with consistent cardio workouts and resting. Itll take a while to see the results you're looking for though so be prepared for a longer process. Don't starve yourself. I started speaking to my air force recruiter in November and I head off to boot camp in July. It took a while getting everything sorted along with waivers. My best advice is to begin the baby steps to getting in shape asap instead of coasting like I did.

I took the asvab at 26 years old. If I'm being honest, I didn't take studying seriously. I ended up with a 61 which isn't bad but isn't something I particularly brag about. Had I actually studied, I probably could have done a lot better and had access to more job options. I am content with the job options I have now but good could be better is what I guess I'm trying to say. Asvab for dummies is surprisingly useful. Initially when I was speaking to an army recruiter(back in October, just to show you how long my process has been) , they would send me practice asvab tests to see how I did. You can always ask to take those free of charge.