simple gaining tip--water doesn't add calories. However, 30 ounces of milk would have given you 359 calories, or about the same as a candy bar.30 ounces of orange juice would have given you 389. Just so, if you were to exchange water for other liquids for breakfast, lunch, and dinner, you'd be adding over 1000 calories extra per day. It's usually suggested 3500 excess calories equal a gain of a pound. You can play with the math, but the bottom line, exchanging water for other drinks can help chub you up. Btw, 30 ounces of cola would be 347 calories. Hard core gainers will also add a tablespoon (119 calories) of olive oil to their orange juice (you don't really taste it if you blend well) to kick up calories, or add cream to their milk to kick up calories that way. Buy a container of half and half, and 30 ounces you give you a helpful 1,134 calories. Good luck with the gaining