1. The hike up the mountain was strenuous, but the view from the top was worth it.
2. My doctor recommended avoiding strenuous exercise while I recover from my injury.
3. The construction workers were engaged in strenuous physical labor under the hot sun.
4. The marathon runners trained for months to prepare for the strenuous race.
5. Working two jobs and going to school full-time was a strenuous schedule for her to maintain.
6. The demanding boss expected his employees to work long, strenuous hours without complaint.
7. The ballet dancer's strenuous practice regimen paid off with a flawless performance on opening night.
8. It was a strenuous task to clean out the cluttered garage, but it was finally organized and tidy.
9. After a strenuous workout at the gym, I felt sore but accomplished.
10. The long and strenuous process of obtaining a visa finally paid off when he was able to travel to his dream destination.