I want to get mentaly and pysically fit for the US Army. What can I do?

the army will build up your self confidence and make you believe in your self. you can join the army at 17 with parents permission which is always an option. when you enlist they only feed you what you need and you loose weight like crazy. my husband was in ait and bct for 16 weeks total and came back 50 lbs lighter. you dont have to be the weight they want but you do have to make tape. meaning you have to be under 26% body fat percentage. you will loose your social anxiety issues immediatly after you live with you "brothers" in the barracks. the main thing they stress on is cardio. run, walk, swim... etc. work on push ups now or atleast stregthening your arms, same with sit ups. when my husband left he could only do 10 push ups and now he can do 200 without an issue. as for eating habits you gotta use common sence there and eat better. i can tell you for sure when you leave for basic you will be eating rice and chicken religously. the brownies and fries will not be an option.good luck to you. the military is a great thing for people to do who dont have a set path else where. and i can tell you from expirience that the first time you go somewhere in your uniform and have people randomly thanking you for serving your country and shaking your hand will be an eye opener for what you are doing. its a very respectable thing for just considering it. so best of luck!