For a diet program to be successful you can’t drastically reduce your calorie intake or your body will kick into a survival mode and begin to store calories as fat. You do need to reduce your calories to lose weight depending upon how much exercise or how active your life style is should determine how many calories you should consume to continue to lose weight.
Vegetables are a great food to eat while all the time. The P90x workout can be intense so it is a good idea to get the right amount of vitamins and minerals in your body.
When you get P90x it comes with a detailed eating and nutritional guide that can tell you what foods were are the best for maximum weight loss and which ones should be avoided so you can enjoy the fastest success with P90x.