If you stop eating for 7 days your lean muscle will turn into fat. This will = weight loss on the scales; although you may appear larger in the mirror. After 14 days you will … look smaller and be weaker and have a higher body fat composition.After 30 days you will perish and lose 100% of your body weight. It is better to eat smaller portions several times throughout the day.Drink only water stay away from fast foods and fried foods.his will = weight loss on the scales; although you may appear larger in the mirror. After 14 days you will … look smaller and be weaker and have a higher body fat composition. After 30 days you will perish and lose 100% of your body weight.