You should look at the relationship between exercise and food intake, not just time. If you are really thin, you can add some sugar (monosaccharide is the best) during and at the end of training. The total intake of protein can refer to the standard of 1.5g/kg body weight per day. If the difference is much, you can eat protein powder. If it is not bad, don't eat it. Rice and sugar are the same goal. You can't eat less when you gain muscle. It's no use eating too much If you can't count, you have to account for about half of the food at a time. Do not eat too much.