on a full stomach

on a full stomach (right after you have eaten a lot) — на сытый желудок, на полный желудок

Example: You should never exercise on a full stomach.

on an empty stomach (without eating anything before doing something) — на голодный желудок, на пустой желудок

Example: It’s not good to drink alcohol on an empty stomach.

Related vocabulary

[I'm stuffed]
[eat one's fill]
[have a hollow leg]
[stuff one's face]
[pig out]