I'm all in favor of eating fruit for breakfast, but the grapes should be eaten alone, as should the watermelon, and you can eat the bananas and mango together. Otherwise you may have bloating and gass, as watermelon will digest first, followed by the bananas, mango, and then the grapes. If anything, eat the watermelon, wait 30 min., then eat the bananas and mango, wait an hour, and then eat the grapes. Or just eat 700 calories of foods with similar digestion time together. Some people think fruit gives them gas; this is because they are eating fruits in bad combinations, eat a high-fat diet, a highly processed diet, or all of the above.