マッチョグルメ

Macho Gourmet

The main character Tennoji boasts an overwhelming muscle mass which he cultivated at the gym, imposing himself to a strict diet in order to sculpt his body. However once every few weeks he has a "Cheat Day," a day where he is allowed to eat whatever he want how much he wants. The story follows Tennoji on his cheat days. (Source: gurashii.com)