No you can't.

Room temperature overnight leftovers leftovers, soups, cold dishes, marinated food is best not to eat, because it is easy to bacterial overload, resulting in diarrhea and other diseases. The general advice from the scientific community is that leftovers should be stored at room temperature for no more than four hours, and not more than two hours at high temperatures.

It is said that the low incidence of stomach cancer is related to the habit of not eating overnight vegetables. As part of the leafy green vegetables contain more nitrates, cooked if left too long, under the decomposition of bacteria, nitrates will be reduced to nitrite, carcinogenic, heating can not be removed.

Expanded

"Overnight" is not the key to the production of nitrites, and heating will not increase the content of carcinogens. Of course, many of the vitamins in vegetables are destroyed when they are heated, and vegetables that are heated many times are harder to eat. From the point of view of "good food", "overnight vegetables" is indeed worse; from the nutritional point of view, many times heating is not good.

Healthy eating method: usually stem and leafy vegetables with the highest nitrate content, melon vegetables slightly lower, root and cauliflower class in the middle. Therefore, if you buy different kinds of vegetables at the same time, you should eat the first stem and leafy, such as cabbage, spinach and so on. If you are ready to do some more dishes the next day to eat hot, you should do as little as possible stem and leafy vegetables, and choose melon vegetables.

People's Daily News - which overnight food can not be eaten

People's Daily News - overnight food can eat? Five kinds of overnight vegetables should not eat