1. The boxer spent hours shadowboxing in front of a mirror to perfect his technique.
2. She was caught shadowboxing in her room, pretending to be a professional fighter.
3. The coach instructed his team to warm up by shadowboxing before the match.
4. He used shadowboxing as a way to relieve stress and frustration.
5. The boxer's shadowboxing routine helped him stay in shape during the off-season.
6. The gym was filled with the sound of athletes shadowboxing in preparation for their upcoming competitions.
7. She felt silly at first, but soon got into the rhythm of shadowboxing with her trainer.
8. The two friends spent the afternoon shadowboxing in the park, laughing and joking as they practiced their moves.
9. The boxer's shadowboxing routine was so intense, it left him sweating and out of breath.
10. He had to remind himself to focus on his form while shadowboxing, rather than just throwing punches wildly.