You won't get ripped muscles in a month. It generally takes 6 months to a year to build a nice mass in your arms. If your losing 15 pounds a week, than there is no way you can see a 4 pack. Losing 15 lbs means your losing bad fats which surround your muscles, but in order for you to see abdominal muscles your body fat percentage has to be under 12% to see them effectively. Basically zain, I'm calling you out. A month ago you were overweight and at the point of taking diet pills, now you're so ripped eh? Anyways, if you want to lose weight effectively, you're going to have to diet. Now, this doesn't limit you to only vegetables. This means eat more veggies and more fruits. Reduce the amount of trans fat you intake (basically fast food). A great snack for work outs is beef jerky. Its super low on fat and super high in proteins. Theres almost no way you're going to lose 30 lbs in 2 months, unless you have a high fat percentage. Post up how much weight you want to lose (I really should be asking how many inches you would like to lose), post up how much time you would like to lose it in, post up what you eat a day, and post up what you want to look like when your time is up.