This is not thin, it is strong, and the fat content is reduced. don't worry
If you want to gain weight, I suggest you do more anaerobic exercise to increase muscle thickness. When the muscles get thicker, they will be heavier, but you should also do aerobic exercise often. Aerobic exercise can make your muscles more in shape. Let the body proportion become more coordinated.
So anaerobic and aerobic combination,
Also, if you eat four eggs a day, it is recommended not to eat yolk. Don't eat more than two egg yolks a day, and throw away the rest. Egg yolk is high in cholesterol, so it is not good to eat too much. Another protein is about 5 grams of protein. Eating four a day is not enough for such an amount of exercise. You can buy some protein powder to supplement it, or increase it to 8 protein to 10 protein every day. Eat more beef.
It's up to you to practice every other day. You can make a plan to practice three breasts on Monday, two legs on Tuesday and three legs on Wednesday.
Back and shoulders. Then practice the same content as the previous three days on Thursday and Friday, with three days as a cycle and rest on Sunday. Abdominal muscles are small muscle groups, which need great stimulation and recover quickly. They can be practiced every day.