I do stomach crunches every morning to strengthen my core.

The horror movie had stomach-churning scenes that made me feel sick.

The roller coaster ride was stomach-churningly thrilling.

The smell coming from the dumpster was stomach-turning.

I had a sour stomach after eating that spicy curry.

Excessive stomach acid can cause heartburn and acid reflux.

He was diagnosed with a stomach ulcer.

He has been suffering from stomach ulcers for years.

I felt butterflies in the pits of my stomach before the big presentation.

I do stomach crunches every day to strengthen my core.