That is a really vague question. A thousand calorie diet plan is designed to give you just the right amount of calories that you need to get through the day. With the help of the plan, you will not put on any excess weight. If you want to lose weight then you should eat god and healthy food that amounts to 1000 calories. Eat a lot of fruits and vegetables through the day. Also include a lot of lean meat in your diet during the day. Nuts also provide good energy and they are a good option for you. Good Luck!