Watermelon

Research shows that eating foods that are full of water, such as watermelon, helps keep you satisfied on fewer calories. (Interestingly enough, drinking water alongside foods doesnt have the safe effect.) At 92 percent water, watermelon is a good source of vitamin C. When its the red variety (some are orange or yellow), it also has lycopene, an antioxidant that may help protect against heart disease and some types of cancer. Other foods that are made mostly of water include cucumbers (95 percent), salad greens (90 percent) and strawberries (91 percent).