I had a similar experience.

Graduated from technical secondary school three years ago, 183 cm.

65 kg class

Now I graduated from junior college.

Less than 3 years 183

80 kilograms

In fact, eating is not the main thing, mainly by skipping classes to sleep.

I often play computer games all night, eat steamed buns at 7 am and sleep until 4 pm. If you are hungry halfway, get up and eat less to avoid drowsiness.

After dinner, continue to play computer until 12 a new day comes to buy fried noodles or cook instant noodles.

The next morning I went to eat in a small cage ~ ~ to sleep ~ ~

Sitting for a long time without exercise is the easiest way to get fat. Touch basketball once a month to get to know each other.

In terms of eating, snacks such as potato chips are recommended to be purchased as labor. Once a week.

It is best not to try the so-called scientific fattening method. Weight gain varies from person to person. Many people can't eat fat all their lives. I used to eat butter with a fat content of 90% as a meal, and it didn't work.