Stress
All the stressful parts of healthcare will be out of your hands. The good thing about working under more powerful and influential people is that you can hand things off when the going gets rough. But, to be fair, you'll see a lot of blood and guts and gross stuff...so that could stress you out a bit. Then again, if that stresses you out, you probably shouldn't do this job.
Your biggest stressor is going to be locking down a schedule that lets you stay home on the holidays (source).