Fiber and good gut biome. It can take a while to correct if out of wack.

Eat less frequently. OMAD or skip one meal. Also if you’re drinking a lot of water, supplement with electrolyte capsules (no Gatorade) to maintain optimal function. Reduce or eliminate snacking between meals.

the large intestines absorbs water, electrolytes, and vitamins. It won’t function as well if your shits out of whack.