Muscleman (noun)

A man with well-developed muscles, especially one who performs feats of strength for entertainment or sport.

Origin:

From the words "muscle" meaning "bodily tissue composed of cells or fibers, the contractile properties of which produce movement" and "man" meaning "an adult male human", it was coined in the late 19th century.

Examples:

1. The muscleman flexed his biceps for the crowd.
2. The circus featured a strongman act with a muscleman lifting heavy weights.
3. He was a muscleman, who would be the best in the arm wrestling competition.
4. My dad was a muscleman, he was always lifting weights.
5. The muscleman was showing off his physique on the beach.