barrel chest
Noun
Meaning
A large, deep chest, as:
A robust chest, often correlated with ample physical strength and endurance, especially among people raised at high altitudes.
A deep and somewhat misshapen chest, sometimes associated with emphysema.
Source: en.wiktionary.orgExamples
Anton is now 20. He is about 5-foot-10 and thick, with a barrel chest, fire hydrant arms and shoulders that look like slabs of meat.
He's got a barrel chest and the gut of a man who never let his changing metabolism alter his love for fried food.