How can ONE Championship have two weight champs if

Underground
1

... if they have their fighters tested for hydration to keep them at their normal walking weights?

Cuz I know there are or were like 2 champ champs for multiple weight classes, but how can you go up or down in weight between classes if they are tested.  Are allowances made for those specific guys?

I wonder this cuz I thought if the UFC did this to stop people from missing weight and fucking up fight cards, wouldn't that be the end of superfights where a current champ goes up or down to fight another current champ?. Apparently not since ONE Championship still has them, but I'm wondering how they allow that.

2

By eating more/less and working out differently. You can gain/lose weight in more ways than cutting water weight.

3
JOESONDO -

By eating more/less and working out differently. You can gain/lose weight in more ways than cutting water weight.

That makes sense.