Think your career is stressful? While few jobs are stress-free, the most anxiety-inducing careers might not be the ones you’d expect. Using data from the US Department of Labor’s Occupational Information Network (O*NET), Business Insider has identified the most stressful jobs in America—and while some of the results are predictable (being a surgeon or police officer, for instance), others are truly surprising.

O*NET provides resources for job-hunters, including extremely detailed information on the skills, knowledge, and even personality traits it takes to excel at different careers. It also ranks how stressful every job is on a scale of zero to 100. After searching through O*NET’s “stress tolerance” ratings, Business Insider identified 29 jobs with a stress score of 94 or higher.

Many of the jobs are in the healthcare and law enforcement fields, while others involve the arts, manual labor, and mental healthcare. For example, costume attendants—the people who select and fit actors with costumes in movies and theater—made the list at 19th place, while art therapists ranked 17th. Interestingly, Business Insider also found that, according to O*NET’s ratings, being a telephone operator is only slightly less stressful than being a nurse anesthetist and is even more stressful than being an acute care nurse.

Whether you’re hoping to avoid stress at all costs, or looking for a job that puts your stress tolerance to the test, check out the ten most stressful jobs below:

1. Urologist
2. Police, Fire, and Ambulance Dispatcher
3. Anesthesiologist Assistant
4. Nurse Anesthetist
5. Telephone Operator
6. Acute Care Nurse
7. Dancer
8. Obstetrician and Gynecologist
9. Surgeon
10. Airline Pilot, Copilot, and Flight Engineer

[h/t Business Insider]