What food is high in fat and carbohydrate (sugar starch)?

Fat cannot be directly digested and absorbed. I'm afraid you're not quite sure about that. Jokes about fat need more digestion steps. Generally, the fat content of animal fat and plant fat is obviously higher, such as fat meat, peanuts and nuts, but it is not recommended to eat in large quantities, which will increase the burden on the digestive system.

It is recommended to eat more carbohydrates, such as whole wheat bread, rice and noodles. Milk, eggs, fresh vegetables and a small amount of meat are actually the best food to enhance physical fitness and gain weight.

Want to gain weight, not just eat. If you want to absorb it well, you have to increase exercise, especially aerobic exercise.