Smash HQ's large training room was packed, as several of the fighters had focused on physical conditions to improve in their matches.

Luigi hopped over small gaps, onto small platforms and, to top it off, grabbed the top of a flagpole and slid down. He jumped off and landed with a gymnast pose, bowing to an invisible crowd.

Donkey Kong lifted two 100-pound weights in each hand, with Diddy Kong cheering him on as he did so. Seeing this as both a challenge and an opportunity, Bowser let out a deep single laugh and hoisted up a large barbell. He began to lift, seeing who could do the most reps.

On a gymnast mat in the lower-left corner of the room, Samus, clad in her Zero Suit, dove and flipped acrobatically through the air. Awed, Pikachu joined in and tried to mimic her movements… only to mistime a roll and land on the mat face-first.

Little Mac let loose at a Sandbag, hitting hard with both gloved fists. Sonic pressed a button on his blue treadmill, his walking pace soon increasing to a fast jog. Wario huffed as he did some bench presses, Waluigi standing over him and shouting encouragement like a coach. Arms trembling, Wario tried to hold the barbell up… only for his efforts to be in vain. It collapsed on top of him and he squirmed, yelling at Waluigi to get it off. Unfortunately, his purple-clad partner only slapped his knee and burst into laughter at his predicament.

And in the upper-right corner of the room, Mario, Link, and Kirby tried to stay completely still as they held their arms above their heads and balanced on one leg. In front of them rested a TV screen with a white-skinned figure in a yoga outfit performing the Tree pose.

"Breathe slowly as you hold this pose," the figure spoke, a red dot slightly moving through a yellow circle to indicate the process. "Focus on holding your balance." If said balance was lost, the dot would move outside the circle and the exercise would fail.

And the trio wasn't doing very good at it, either.

Kirby wobbled from side to side, Link accidentally dropped his stance and fought to correct it, and Mario tilted a little bit to the left.

"Try to keep your center of balance within the yellow area," the figure on the TV instructed. Mario's eyes never left the dot as it shifted and moved throughout the circle, at one point dangerously close to the rim. But he also knew it was a matter of time before one of them would drop the stance or collapse to the floor.

Something tapped him on the shoulder, and he turned to look without breaking the pose. "It seems the three of you are experiencing some difficulty with this exercise."

Link turned and Kirby hopped to get a good look at the speaker…

…and found out it was none other than the woman on the screen, the words "Wii Fit" on her blue top.

"Well then… why don't I help whip you into shape?"

Before Mario could question what she meant… he found himself soaring through the air.

The woman had struck them with a single Warrior pose, knocking them all away and making the TV slide down into a crooked state. Mario hit the wall and collapsed to the floor, Link crashed into a weight rack, and Kirby was sent sailing into a swimming pool where some Water-type Pokémon were playing around, hitting the water with a splash.

"Great! Keep it up!" he heard the TV say. Dismissing the words as he stood and adjusted his cap, he walked over to the woman and babbled something out.

"Me?" the woman asked. "Well, the Announcer couldn't help but notice your desire to prepare, so he turned to me to help you out. Naturally, I was pleased to accept the invitation. You can call me the Wii Fit Trainer."

Glancing around, Mario realized few of the Smashers present had barely noticed her arrival, due to them being immersed in their own activities. Waluigi was staring at her while Wario was still trapped underneath the large barbell, Bowser was holding his foot in pain (having dropped his barbell on it when he noticed her arrival), and Samus was looking at her with a smirk while carrying Pikachu in her arms.

The other Smashers were getting to attention as they noticed her one by one. Link pushed the last weight off him and stood, brushing off his tunic.

A Lapras emerged from the pool's surface so that its neck was fully visible, carrying Kirby on its head. The pink puffball spewed out water like a spout as the Pokémon carried him to the pool's wall. Disembarking, Kirby thanked the Lapras as it dove back under.

The Kongs and Bowser set their weights aside as they approached the Wii Fit Trainer. They were followed by Wario and Waluigi, the former rubbing his neck and elbowing the latter in the stomach, muttering about how great help he was.

Little Mac took off his gloves and handed them to Luigi, who nodded in thanks. Turning off his treadmill, Sonic hopped off and joined the assembling crowd. "So, if I heard this correctly," the boxer said. "You're both here to fight and help us train, right?"

"Precisely," the Trainer replied with a nod. "I am honored to assist you in physical activities… as well as surprise whoever I meet on the field with moves of my own."

Luigi and Donkey Kong gave her a reassuring thumbs-up… before the door to the training room opened. Everyone turned to see Fox and Marth at the entrance.

"Hey, Link!" Fox called out. "You're needed at Skyworld! Pit's waiting for you!"

"And as for me…" Marth added. "I am setting out with Falcon for my world. The Announcer has his eyes on a few warriors he believes are capable of joining us. Expect some new faces when we return."

Nodding, Link moved through the crowd and joined Fox. As the two of them met up, they walked out of sight. Turning to the crowd, Marth cleared his throat. "As for the rest of you… carry on."

The door closed as the swordsman vanished. Everyone turned back to the Wii Fit Trainer as she placed her hands on her hips.

"Alright… who's ready to feel the burn?"