How do I use Regenerator properly?

How do I use Regenerator properly? - Photo of Woman Taking Notes

I'm playing Pokemon Black and I have a Mienfoo with the ability Regenerator on my team.

As Bulbapedia states here

Regenerator restores ⅓ of the Pokémon's maximum HP upon switching out.

However, I'm not really sure how this ability can help me in the game. Does anyone have any advice on how to use Regenerator properly?






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Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

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