Pokeblocks

These are Pokeblocks. 

They were colorful candy blocks made for Pokémon 

and are primarily used to increase a 

Pokémon's condition for Pokémon Contests or 

Pokémon Contest Spectaculars in one of five areas 

such as Coolness, Beauty, Cuteness, Cleverness, and Toughness. 

Pokeblocks are the Candy Blocks from the Generation III 

in Pokémon Ruby & Sapphire, Pokemon Emerald, 

and Pokémon Omega Ruby & Alpha Sapphire. 

I think these Pokeblocks could make the Bodies of all Pokémon 

grow with Pecs instead of expanding their Bellies become bloated. 

In Pokémon Episode called "The Garden of eatin'", 

Professor Oak gave Ash's Snorlax a Pokeblock, 

and he was saying that he was invented it specifically for 

all the Pokémon like Snorlax has huge Appetites. 

Once they eat one, it expands so that a single Cube equals 300 kilograms more 

than regular Pokémon Food. 

In Pokémon Episode called "Berry, Berry interesting", 

May made these Pokéblocks for her Pokémon. 

She created a recipe called May's Purple Surprise which consisted of two Pecha Berries, one Oran Berry, one Bluk Berry, and a small bit of Tamato Berry 

after she picked several Berries from the Garden. 

So, Munchlax gobbled up the Pokeblocks while May was overjoyed 

that she was in love with Munchlax, 

after seeing Munchlax being accused of stealing Pokéblocks from the Trainers staying at the Pokémon Center, she decided to catch it. From that point onward, May has been giving Pokeblocks to Munchlax. She has received tips from Professor Oak to prepare a new kind of Pokeblock, which she called May's Pink Surprise 

able to suppress Munchlax's huge appetite.

I think 1 pink Pokeblock  

can make Munchlax full and fat.