Hot weather and busy work make many office workers feel groggy all day. According to experts' analysis, this is probably a manifestation of kidney qi deficiency and decreased renal function. Summer is the time to tonify the kidney! Many people have a misunderstanding that autumn and winter can only tonify the kidney. In fact, the conditioning of the body should conform to the changes of the four seasons, and more consideration should be given to the rational distribution of diet and seasons to ensure that the human body absorbs the necessary nutrients in different seasons. Traditional Chinese medicine pays attention to the method of nourishing winter diseases in summer, that is, supplementing appropriate food in summer to achieve the purpose of recuperation. People with kidney deficiency had better eat less cold food and sweets and less cold salad. People with kidney deficiency eat raw and cold food and need to be heated and cooked before they are suitable for eating. Eating black in summer is the best way to tonify kidney. Commonly used black foods include black rice, rye, purple rice, black Qiao Mai, black beans, black lobster sauce, black sesame, black fungus, black mushroom, laver, Nostoc flagelliforme, kelp, black mulberry, black dates, chestnuts, longan pulp, black grapes, black pine nuts, black-bone chicken, black sea cucumber and black ant dish. In addition to eating black food, professionals should also learn to regulate their bodies in summer, such as doing some soothing exercises, replenishing more water, eating more fruits and vegetables, and eating more foods that strengthen the spleen, such as red dates.