Hang on there! As much as I love these never ending burn out threads I should point out a flaw with some of these ideas.
For many of the above you can make some supplementary income but they don't usually provide anywhere near full time EP income. Cruise ship, Admin, EMS, Sports, Tactical, tox.
Research and especially teaching involve working in the ED. The pace may be different but you're still in the pit. Ask your attendings next time you're working a shift with them in the pit.
I loudly disagree with the supposition that a res trained EP can go work in internal medicine (or FP for that matter) unless you go and retrain. #1 we assert they shouldn't work in EDs without training, we must recognize that we shouldn't go work in a clinic without training. I was never taught how to manage diabetes, HTN, cholesterol, etc. long term.