He has strong masseters, so he can easily bite through hard food.

If your muscles of mastication are strong, you can chew food more efficiently.

The sarcolemma covers the muscle cells.

He is increasing his muscle tone through daily training.

He exercises his pectoral muscles every day.

He does exercises to train his gluteus muscle every day.

The fascia is an important part that wraps around the muscles.

When he gets angry, his veins that bulge when he is angry become visible.

He is all muscles, just like a meathead.

She exercises her facial muscles every day to keep her face youthful.