Former enlisted guy still working with the Army. Still need to get in shape? I say enjoy every minute you have, the army will get you into shape. I started running a 22 minute 2 mile, about 12 push ups in 2 minutes and 20 situps in 2 minutes and within 3 weeks I was down to a 14 minute 2 mile, about 50 pushups and 60 sit ups. Again, the army will get you into shape. I went to all male basic so I might have also been pushed harder since there were no females holding us back. That is not to offend any female at all, men are just naturally physically stronger and faster. When you get smoked you do it as a group so if a female is there, the smoke sessions are quicker. I also hope you go to all male basic. There is much less drama and "boys will be boys" applies. Even women don't like basic with other women.
Your drill sergeants will try to get you to fight your fellow comrades, they will try to keep you divided, and they will put the fear of god in you. Work as a team, despite your DSs trying to keep you divided, you will work better as a team. You will be there with people from all walks of life. I was an intel guy and went to basic with a bunch of artillery guys at Ft Sill. You will find someone you get along with. You don't have to be best friends with everyone, just don't talk to those you don't get along with.
Our DSs were all infantry, some snipers, some pathfinder, some went through SERE school, one was a ranger. Getting mad and trying to kick their ass is not a good idea, they work as a team and old guys will take cheap shots, but they will not lose. They will tell you you will be going to Iraq, you very likely will. I've been twice and I joined before 9/11, at least you know you're going to go.
Don't worry about trying to wake up at 4am, you never get used to it. There is no snooze button on your new alarm clock and when you get downstairs and start running you will wake up and feel good. Don't worry about quitting smoking, you will have enough to occupy your time that you won't even think about smoking.
That was 6 years ago though and I'm sure things are different. We never had stress cards and I saw some physical interaction between a DS and one of the guys there. Not too bad, just enough to scare the guy.
Remember a couple things: If you're not cheating you're not trying. If you get cought cheating, you weren't trying hard enough.
Millions of people have done it before you. I have seen some fat bastards make it through basic training. I have seen some scrawnet bastards make it though basic training. I have seen weak hearts make it through. The Army was designed for everyone to pass. If you want to pass you will. If you ever think you can't pass, remember "Millions have done it before me".
So what are you going to be? Where are you going? What rank you starting out as? Don't let all that stuff scare you, once you get there and get started it will all fall into place and be normal to you. Honestly, without the Army I would still be working at Bob Evans drinking with the same guys I was with in High School. Probably still be single sharing an apartment with my friends that I drink with. Instead, I have a great job, great wife, own a house, have a dog and cat, and am buying Gurkha's and LFDs instead of Swisher Sweets and Phillie's Blunts. Seriously, if you have any questions about anything send me an e-mail, douglas.p.gordon@us.army.mil.