The grunting is often the sound which is made after a gym-goer holds their breath briefly for a particularly strenuous move.” And it does seem to coincide with a release of tension, as weights ...

Grunting - that loud, sometimes obnoxious noise produced when we exercise ... we take air in and hold our breath for a moment. By doing that, the middle of our body gets squished together ...

Grunting, the loud, sometimes obnoxious, noise typically produced when we exercise ... The vocal folds are open and relaxed when we breath in, sometimes producing a rushing noise.