A dietician or nutritionist doesn't seem like the most stressful job, not like an EMT or tramua surgeon. You can check with your hospital or something if they have a job shadowing program, or if anything, you can go into contact with a dietician and trade thoughts with them. If you're so sure you want to do it and just want to get a feel for the job, lol, hang out in an office or work as a clerk. Also, once you're a nutritionist, you don't have to work in a hospital, you can work out of a private facility, like a clinic. But again, if you want to get in a hospital to get a feel around, there should be a community program that will help you do that. Good luck.