Sarac, serving can be stressful. Do you know how angry or upset people get when they’re hungry or heaven forbid the kitchen make a mistake (you know, because that’s what humans do)? People come into restaurants expecting their food within five minutes of ordering not realizing that yes, we do in fact cook the food to order. When you’ve got four tables on a Friday night and the restaurants on a two hour wait and one of your tables got done eating an hour ago but they’re just chatting? Yeah. it’s stressful. is it the same stress that a doctor or firefighter might experience? no. but it can be a high stress job especially since people are expect a good experience, not just good food. you’re on stage when you’re on the floor and if you’re having a bad day? you better suck it up! you’re table doesn’t care.