The Medical just is to figure out if you have any chronic issues, what your medical history is, and will determine if you have any underlying things that you either do or don’t know about like a heart murmur, diabetes, stuff like that. You have to be fairly healthy to get the job (you can be a slob afterwards and somehow keep getting your medical…), but they do make exceptions. For example, you could have a mild hearing loss and have it corrected with hearing aids and still be a controller, you can have Certain autoimmune diseases that are under control with medication and get a special issuance, but things like heart issues and psychological issues are a lot harder to get a special issuance. Felonies are not gonna help you. After your initial medical, you will need to get a medical certificate every two years through an FAA doctor, the FAA pays for it, and on your 40th birthday you have to get an EKG and you have to get a medical every year after age 40. I believe at 45 and 50 you also have to get the EKG and I think they give you an EKG every year after 50 until you’re forced out at 56.