Dwayne, We don't need to scare her away.
Even though I'm not an EMT If your interested in becoming an EMT why not trying to go join a volunteer squad locally as a non emt. You would get a feel for what they do and see if you have what it takes to deal with all of the lifting and like. Anybody can say to do something/not to do something. The only way to find out is to go out and do it.