Take this medication 'on an empty stomach'. [=when your stomach is empty because you have not eaten for a time]
When I had the flu, just the thought of eating made me 'sick to my stomach'. [='nauseous']
She felt a flutter in 'the pit of her stomach' when he walked through the door.
(..) See, I want something that's going to express my personality... And its ricus. I wanna show off the boobs... The ass... But I'm not so happy with the upper arms and stomach... So. There's your challenge. Both, nice. That's all you've gotta say? I've gotta look good. (..)2013 TvShow: Orange Is the New Black Title: I Wasn't Ready Season: 1 Episode 1