What does the Relaxed nature do?

Relaxed raises Defense by 10% and lowers Speed by 10%.

What stat does Relaxed increase?

Relaxed increases Defense by 10% and decreases Speed by 10%. HP is unaffected.

A Relaxed Pokémon likes Sour flavors (tied to Defense) and dislikes Sweet flavors (tied to Speed).

Yes. Use a Relaxed Mint to apply the Relaxed stat effect to any Pokémon without changing its displayed nature.

Nature

Raises Defense, lowers Speed.

Raises Defense +10%

Lowers Speed −10%

LikesSour

DislikesSweet

Slow physical walls, Trick Room defensive pivots.

Bold −Attack Impish −Sp. Atk Lax −Sp. Def

What does the Relaxed nature do?: Relaxed raises Defense by 10% and lowers Speed by 10%.
What stat does Relaxed increase?: Relaxed increases Defense by 10% and decreases Speed by 10%. HP is unaffected.
What flavor does a Relaxed Pokémon like?: A Relaxed Pokémon likes Sour flavors (tied to Defense) and dislikes Sweet flavors (tied to Speed).
Can I change a Pokémon to Relaxed?: Yes. Use a Relaxed Mint to apply the Relaxed stat effect to any Pokémon without changing its displayed nature.