How to Get Past the Flab Zone

Save your game by hitting the Save Block, then run to the right to exit the first screen of the Flab Zone.

Break all of the blocks you encounter on subsequent screens -- you will eventually unlock the game's first Attack Piece. Once you find this block, you will be treated to a cut scene.

Run to the right and jump across the elevated platforms, then sit through the second cut scene.

Jump up the yellow platforms to the right, and then run across the bridge. Continue to the right until you see a green pipe. Jump in the pipe.

Bounce the juggling block in the lower right-hand part of the room back and forth between the two plumbers. Once it has been bounced 20 times, you will earn the Attack Pieces it contains.

Exit the pipe and speak with the blue monster. Complete his quiz to earn 50 coins, and then enter the red pipe to the right.

Bounce the second juggling block you encounter to earn four more Attack Pieces.

Continue running to the right until you reach a room with a gap in the floor. Drop down and use your spin jumps to cross another large gap to the right, earning you the final Attack Piece.

Exit the room using the pipe and run to the right until you reach the final boss.

Use Mario to attack the boss's orange orbs, and Luigi to attack the green ones. When the boss splits, attack the version that glows. Repeat this process until the boss has been defeated.