Although beef is so nutritious, the more you eat, the better. Even if you are exercising, you should not eat too much. If you eat breakfast, you can eat about 80 grams a day. In fact, beef should not be eaten often, but once a week. Beef doesn't ripen easily. Put a hawthorn, an orange peel or a little tea when cooking, which is easy to rot. Stewed beef is more nutritious. The muscle fiber of beef is rough and difficult to digest, and the content of cholesterol and fat is also high, so the elderly, children and people with weak digestive ability should not eat more, or eat some tender beef properly. Western modern medical research believes that beef belongs to red meat, which contains a malodorous acetaldehyde, and excessive intake is harmful to health.