isometric exercise (noun)

1. The protagonist in the novel practiced isometric exercises to stay fit and strengthen his muscles.

2. Why did the bodybuilder refuse to do isometric exercises? Because he didn't want to stay in one place!

3. In the comic strip, the superhero demonstrated his incredible strength by effortlessly performing isometric exercises.

4. In the futuristic world of the science fiction novel, humans used advanced technology to engage in isometric exercises that enhanced their physical abilities.