Energy Hold



The Energy Hold is the largest area within Bowser's body in Mario & Luigi: Bowser's Inside Story. It is located in his small intestine. This area is accessible to Mario and Luigi once they discover Durmite is one of the Star Sages.

Starlow and the Mario Bros. first come here in pursuit of Durmite, but she slips under a wall of three Boo-like blocks that block the path; Mario and Starlow ponder their next course of action as Luigi falls in the area's pits repeatedly. Meanwhile, Bowser makes his way to Dimble Wood in pursuit of the Star Cure; along the way, he discovers the Tower of Yikk and defeats it in battle while in his giant form, gaining entry to the tower. Inside, Bowser encounters Yikk himself, who demonstrates how to operate the Boo-ray Machine; its light causes the barrier of blocks to disappear and allows Starlow and the Mario Bros. to venture further into the Energy Hold.

Mario and Luigi must use the Boo-ray machine's light to manipulate the environment and navigate through the Energy Hold; the light reveals invisible platforms, as well as Boo-faced platforms that appear and vanish depending on whether the light is present. Most parts of the area also require the Spin Jump to progress. Mario and Luigi also learn how to burrow underground, and can collect the area's ten Attack Pieces to unlock the Super Bouncer Bros. Attack.

Mario and Luigi eventually find Durmite again, but she slips through a door which can only be opened by collecting all the parts of the Star Panel. After a few more doors, they finally catch Durmite, who reveals her true name to be Wisdurm, and challenges the Bros. to a battle for the first Star Cure. Upon defeating Wisdurm, she morphs into her true form before making good on her promise and giving Mario and Luigi the Star Cure. Wisdurm then leaves Bowser's body, removing two obstructions from a doorway in the process that allows the two to exit the Energy Hold; this also unlocks the Joint Tower for them to visit.

Enemies

 * Napses
 * Peps
 * SPEED Peps
 * POW Peps
 * DEF Peps
 * Piranha Plorps
 * Pwallops
 * Wisdurm (boss)

Items
The following are overworld items found in this area.

Beans
There are 17 Beans in total.
 * Bottom floor of the third room in the upper area to the hub: 
 * Upper floor of the third room in the upper area to the hub: 
 * Treasure room near the end of the lower-left area to the hub: 
 * Upper floor of the third room in the upper-left area to the hub: 