przepona brzuszna in inglese:

Your top does not provide enough midriff coverage, young lady.

Her diaphragm rises and falls, slower now.

You actually use energy when you laugh, you move your diaphragm, you expand your lungs, and both those things can be helpful.

Hiccupping starts with a sudden inhalation produced by a downward jerk of the diaphragm and contraction of the muscles between the ribs