Stress
Bzzzzz! The buzzer goes off and Cavity Sam's nose lights up—your tweezers touched the edge as you tried to remove Sam's funny bone, and now you lose your turn. That's how it goes when you make a mistake playing the game Operation. That's not how it goes in a real operating room.
One wrong move could cause serious complications and could literally mean life or death for a patient, not to mention a possible lawsuit for you. You think the constant possibility of that happening might make things a little stressful?
Aside from the very serious stress from the surgeries themselves, you might also end up stressed out about the lack of control that you have over your schedule. Surgeries are bumped up, pushed back, or cancelled for reasons that are totally out of your control. During surgery, things can change for the worse very quickly. If you don't learn to expect the unexpected and go with the flow, you're gonna have a bad time.
The ultra-mental concentration, and sometimes the very tasks that you perform, can be physically stressful. You may think that it's not that hard to hold a patient's liver a smidge to the side of its usual position to make room for the surgeon, but do it for an hour and your arm and neck muscles may need some TLC from Dr. Ben-Gay afterwards.
The good news is, once your day is over and if everything has gone well, you can go home, put up those weary feet, and relax with a clear mind.