Protein is the main way to gain muscle, which absolutely ensures carbohydrate/glycogen and controls fat.

Rice belongs to carbohydrates. Adequate carbohydrate in the diet is the basis for protein to gain muscle. Simply put, don't be hungry.

Whether to eat a lot of rice depends on whether your daily carbon intake is sufficient. If you have no other source of carbohydrates, you must eat more rice.

Of course, if conditions permit, the sources of carbohydrates should be diversified. Rice should not be eaten more, and some low GI sources should be considered.