Wake up in the morning morning urine is very yellow what's going on

Get up in the morning morning urine is very yellow, mainly because there is no water at night, or the amount of water the day before is not enough, or eat a lot of greasy food caused by insufficient water will form less urine, if the day before eating greasy food, these foods in the human body digestion, will consume a lot of water, greasy food metabolites will contain a lot of organic salts and inorganic salts, urine will be in a very concentrated state, urine will be yellow. It is suggested to drink more water at ordinary times, make effective control on the food eaten, dinner is mainly light diet, such as all kinds of vegetables, fruits, coarse grains, coarse cellulose food, control excessive intake of sodium salt and protein.